71:
The surname and part of the date are smudged. The earliest known reading of this portion of the map is by a
Majorcan named Pasqual in 1789 (before the ink accident) who jotted the surname down as "Guullen". It has since been read by other investigators as Diego de Senill ('the Old' - a hopeful
112:(where Henry was organizing his expeditions), was not unlikely. He also settled on interpreting the date as 1427. Peres's reading of name and date have since become common in Portuguese sources. The hypothesis has been sufficiently accepted that the
99:
In 1943, Portuguese historian Damião Peres proposed that only Diogo de Sunis or Diogo de Silves should be entertained as readings from the smudged surname, and opted for Silves simply because
Portuguese surnames of that era are usually
119:
There is no other record or information about Diogo de Silves, whom he worked for or what his objective was. It is often assumed (albeit without corroboration) that Diogo de Silves was a captain in the service of the
Portuguese prince
160:
archipelago, that he probably did not reach the western islands of Flores and Corvo (although westerly islands are drawn, they are probably fantastical; Vallseca seems to have lifted the names directly from earlier maps, e.g.
136:. How he ended up in the Azores is uncertain - he may have been blown off course, or may have been gathering intelligence about oceanic winds and currents, perhaps experimenting with one of the earliest
124:. If so, he may have been sent out in 1427 as just one of Henry's several expeditions in the 1420s down the West African coast in an attempt to double
142:
routes for Henry. Finally, the note that he was the "pilot" retains the possibility that the captain of that expedition was actually someone else (
156:
The only thing that can be gathered from
Vallseca's 1439 map is that he probably only discovered the eastern and possibly central clusters of the
374:
1165:
1170:
150:
271:
1432 is preferred by the
Visconde de Santarem (as it fits with Gonçalo Velho), although d'Avezac, Mees and others read '1427'.
1180:
452:
339:
877:
367:
307:
1131:
545:
1175:
1106:
640:
113:
887:
360:
146:?). The reference to the 'King' and not Henry raises the possibility he may have been in the service of the
132:, and it has even been speculated he might have been part of a failed Portuguese attack or slave raid on the
105:
1126:
580:
928:
842:
497:
1121:
407:
67:(Transl. "These islands were found by Diego de ??? pilot of the King of Portugal in the year 14??")
705:
398:
1101:
1061:
725:
700:
665:
502:
1076:
933:
837:
1096:
615:
610:
198:
785:
522:
507:
487:
1144:
912:
635:
585:
989:
862:
765:
745:
660:
560:
65:
Aquestes isles foram trobades p diego de ??? pelot del rey de portugal an lany MCCCCXX?II
720:
535:
437:
250:
242:
1111:
994:
226:
1014:
968:
958:
892:
857:
690:
432:
422:
221:
e.g. Beazley, "Introduction", p.lxxxvi, in C.R. Beazley and E. Prestage, editors (1896-99)
847:
645:
482:
297:
8:
867:
565:
211:
Chronica do
Descobrimento e Conquista da Guiné.... pelo Chronista Gomes Eannes de Azurara
147:
121:
49:
670:
555:
550:
412:
1071:
1066:
938:
472:
81:
897:
760:
427:
76:, who officially discovered the Azores in 1431). Others have proposed de Sevill or de
1116:
1051:
852:
790:
770:
685:
675:
650:
600:
303:
1086:
882:
695:
540:
492:
755:
740:
630:
417:
999:
872:
750:
143:
73:
1024:
907:
832:
680:
620:
575:
517:
343:
336:
109:
1019:
735:
715:
710:
655:
570:
512:
56:, dated 1439. The map, marred by an inkwell accident in 1869, has a note by the
973:
775:
595:
462:
133:
42:
1029:
1159:
1056:
963:
902:
805:
780:
162:
948:
730:
1091:
1009:
1004:
800:
625:
447:
138:
125:
45:
590:
467:
1081:
943:
605:
442:
352:
795:
477:
953:
101:
53:
31:
27:
239:
Notice des découvertes faites au môyen-age dans l'Océan
Atlantique
129:
77:
157:
116:
saw fit to emit a stamp in honor of 'Diogo de Silves' in 1990.
57:
35:
84:, Sivils. The date has been variously interpreted as MCCCCXX
41:
He is only known from a reference on a chart drawn by the
395:
23:
128:, or that he may have been going on a routine trip to
60:
archipelago, presumably written by
Vallseca, stating:
223:
The
Chronicle of the Discovery and Conquest of Guinea
302:. University of Minnesota Press. pp. 465–474.
153:(then governor of Ceuta) rather than Prince Henry.
280:
26:15th century) is the presumed name of an obscure
1157:
274:
299:Foundations of the Portuguese Empire, 1415–1580
262:José Gomez Imaz, 1892 (as quoted in Mees, p.71)
368:
283:Pathfinders: A Global History of Exploration
209:e.g. by Visconde de Santarem (1841, p.390)
108:, in the Algarve, not far from the port of
375:
361:
247:Histoire de la découverte des îles Açores
382:
151:Pedro de Menezes, 1st Count of Vila Real
324:História dos Descobrimentos Portugueses
1158:
295:
285:. New York: W.W. Norton & Company.
180:
178:
356:
289:
175:
80:or de Sunis, Survis, Sinus, Simis,
13:
281:Fernandez-Armesto, Felipe (2006).
14:
1192:
1166:15th-century Portuguese explorers
878:José Alberto de Oliveira Anchieta
335:Copies can be found online, e.g.
1171:15th-century explorers of Africa
329:
316:
1107:Luis de Carvajal y de la Cueva
265:
256:
231:
215:
203:
191:
72:reference in the direction of
1:
1132:Sebastião Rodrigues Soromenho
237:Proposed by Marquis d'Avezac
188:, 1969 edition, Vol. 1, p.208
168:
34:who allegedly discovered the
1181:Maritime history of Portugal
929:Alexandre Rodrigues Ferreira
186:A Nautica dos Descobrimentos
7:
245:) and agreed by Jules Mees
10:
1197:
1127:Pedro Fernandes de Queirós
1140:
1042:
982:
921:
825:
818:
531:
388:
114:Portuguese postal service
838:Alexandre de Serpa Pinto
408:Afonso Gonçalves Baldaia
1102:Juan Rodríguez Cabrillo
1062:Antonio Díaz de Cardoso
1044:In foreign service
843:André Álvares de Almada
726:João Fernandes Lavrador
701:João Afonso do Estreito
666:Fernão Pires de Andrade
616:Diogo Lopes de Sequeira
611:Diogo Fernandes Pereira
296:Diffie, Bailey (1977).
1145:Portuguese discoveries
1077:Gaspar Castaño de Sosa
934:António Raposo Tavares
636:Duarte Pacheco Pereira
453:Diogo de Melo Coutinho
69:
1176:History of the Azores
954:Diogo Álvares Correia
706:João Álvares Fagundes
581:Cristóvão de Mendonça
536:Afonso de Albuquerque
438:Bartolomeu Perestrelo
346:(retrieved 25/4/2011)
322:Peres, Damião (1943)
104:and that the town of
62:
969:Martim Soares Moreno
959:Domingos Jorge Velho
893:Paulo Dias de Novais
858:Francisco de Lacerda
786:Pedro Álvares Cabral
523:Tristão Vaz Teixeira
508:Lançarote de Freitas
503:João Gonçalves Zarco
488:Gonçalo Velho Cabral
433:Antoniotto Usodimare
383:Portuguese explorers
92:II (1432) or MCCCCXX
88:II (1427) or MCCCCXX
1122:Ñuño Fernández Lobo
990:António da Madalena
868:Hermenegildo Capelo
863:Gonçalo da Silveira
766:Lourenço de Almeida
746:João Vaz Corte-Real
661:Fernão Mendes Pinto
561:António de Saldanha
225:, London: Hakluyt,
148:Admiral of Portugal
122:Henry the Navigator
50:Gabriel de Vallseca
16:Portuguese explorer
1112:Luís Vaz de Torres
1097:Juan Díaz de Solís
1072:Ferdinand Magellan
995:António de Andrade
939:Baltasar Fernandes
473:Fernando de Castro
342:2011-05-23 at the
1153:
1152:
1117:Manuel de Mederos
1052:Alberto del Canto
1038:
1037:
853:Francisco Barreto
848:Francisco Álvares
814:
813:
791:Pedro Mascarenhas
771:Miguel Corte-Real
686:Gomes de Sequeira
676:Gaspar Corte-Real
646:Fernão de Loronha
601:Diogo de Azambuja
586:Cristóvão Jacques
483:Gonçalo de Sintra
38:islands in 1427.
1188:
1045:
888:Lourenço Marques
823:
822:
756:Jorge de Menezes
721:João de Santarém
671:Francisco Serrão
631:Duarte Fernandes
556:António de Faria
551:António de Abreu
418:Alvise Cadamosto
413:Álvaro Fernandes
401:
393:
392:
377:
370:
363:
354:
353:
347:
333:
327:
320:
314:
313:
293:
287:
286:
278:
272:
269:
263:
260:
254:
235:
229:
219:
213:
207:
201:
195:
189:
182:
30:explorer of the
1196:
1195:
1191:
1190:
1189:
1187:
1186:
1185:
1156:
1155:
1154:
1149:
1136:
1043:
1034:
1025:Galeote Pereira
1015:Estêvão Cacella
978:
917:
908:Sancho de Tovar
898:Pero da Covilhã
833:Afonso de Paiva
810:
761:Lopes Gonçalves
691:Gonçalo Álvares
681:Gaspar de Lemos
641:Estêvão da Gama
621:Diogo Rodrigues
576:Bartolomeu Dias
546:André Gonçalves
527:
518:Pedro de Sintra
458:Diogo de Silves
428:António de Noli
423:Antão Gonçalves
396:
384:
381:
351:
350:
344:Wayback Machine
334:
330:
321:
317:
310:
294:
290:
279:
275:
270:
266:
261:
257:
236:
232:
220:
216:
208:
204:
196:
192:
184:Gago Coutinho,
183:
176:
171:
20:Diogo de Silves
17:
12:
11:
5:
1194:
1184:
1183:
1178:
1173:
1168:
1151:
1150:
1148:
1147:
1141:
1138:
1137:
1135:
1134:
1129:
1124:
1119:
1114:
1109:
1104:
1099:
1094:
1089:
1087:Ginés de Mafra
1084:
1079:
1074:
1069:
1064:
1059:
1054:
1048:
1046:
1040:
1039:
1036:
1035:
1033:
1032:
1027:
1022:
1017:
1012:
1007:
1002:
997:
992:
986:
984:
980:
979:
977:
976:
974:Pedro Teixeira
971:
966:
961:
956:
951:
946:
941:
936:
931:
925:
923:
919:
918:
916:
915:
910:
905:
900:
895:
890:
885:
883:José Sapateiro
880:
875:
870:
865:
860:
855:
850:
845:
840:
835:
829:
827:
820:
816:
815:
812:
811:
809:
808:
803:
798:
793:
788:
783:
778:
776:Nicolau Coelho
773:
768:
763:
758:
753:
748:
743:
738:
733:
728:
723:
718:
713:
708:
703:
698:
696:Gonçalo Coelho
693:
688:
683:
678:
673:
668:
663:
658:
653:
648:
643:
638:
633:
628:
623:
618:
613:
608:
603:
598:
596:Diogo da Rocha
593:
588:
583:
578:
573:
568:
566:António Galvão
563:
558:
553:
548:
543:
541:Álvaro Martins
538:
532:
529:
528:
526:
525:
520:
515:
510:
505:
500:
498:João Fernandes
495:
493:João de Trasto
490:
485:
480:
475:
470:
465:
463:Diogo de Teive
460:
455:
450:
445:
440:
435:
430:
425:
420:
415:
410:
404:
402:
397:In service of
390:
386:
385:
380:
379:
372:
365:
357:
349:
348:
328:
315:
308:
288:
273:
264:
255:
230:
214:
202:
190:
173:
172:
170:
167:
134:Canary Islands
15:
9:
6:
4:
3:
2:
1193:
1182:
1179:
1177:
1174:
1172:
1169:
1167:
1164:
1163:
1161:
1146:
1143:
1142:
1139:
1133:
1130:
1128:
1125:
1123:
1120:
1118:
1115:
1113:
1110:
1108:
1105:
1103:
1100:
1098:
1095:
1093:
1090:
1088:
1085:
1083:
1080:
1078:
1075:
1073:
1070:
1068:
1067:Estêvão Gomes
1065:
1063:
1060:
1058:
1057:Aleixo Garcia
1055:
1053:
1050:
1049:
1047:
1041:
1031:
1028:
1026:
1023:
1021:
1018:
1016:
1013:
1011:
1008:
1006:
1003:
1001:
1000:Bento de Góis
998:
996:
993:
991:
988:
987:
985:
981:
975:
972:
970:
967:
965:
964:Duarte Coelho
962:
960:
957:
955:
952:
950:
947:
945:
942:
940:
937:
935:
932:
930:
927:
926:
924:
920:
914:
911:
909:
906:
904:
903:Roberto Ivens
901:
899:
896:
894:
891:
889:
886:
884:
881:
879:
876:
874:
873:Jerónimo Lobo
871:
869:
866:
864:
861:
859:
856:
854:
851:
849:
846:
844:
841:
839:
836:
834:
831:
830:
828:
824:
821:
817:
807:
806:Vasco da Gama
804:
802:
799:
797:
794:
792:
789:
787:
784:
782:
781:Paulo da Gama
779:
777:
774:
772:
769:
767:
764:
762:
759:
757:
754:
752:
751:Jorge Álvares
749:
747:
744:
742:
739:
737:
734:
732:
729:
727:
724:
722:
719:
717:
714:
712:
709:
707:
704:
702:
699:
697:
694:
692:
689:
687:
684:
682:
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667:
664:
662:
659:
657:
654:
652:
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647:
644:
642:
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637:
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632:
629:
627:
624:
622:
619:
617:
614:
612:
609:
607:
604:
602:
599:
597:
594:
592:
589:
587:
584:
582:
579:
577:
574:
572:
569:
567:
564:
562:
559:
557:
554:
552:
549:
547:
544:
542:
539:
537:
534:
533:
530:
524:
521:
519:
516:
514:
511:
509:
506:
504:
501:
499:
496:
494:
491:
489:
486:
484:
481:
479:
476:
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471:
469:
466:
464:
461:
459:
456:
454:
451:
449:
446:
444:
441:
439:
436:
434:
431:
429:
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421:
419:
416:
414:
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403:
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387:
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373:
371:
366:
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311:
309:0-8166-0782-6
305:
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292:
284:
277:
268:
259:
252:
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244:
240:
234:
228:
224:
218:
212:
206:
200:
194:
187:
181:
179:
174:
166:
164:
163:Catalan Atlas
159:
154:
152:
149:
145:
144:Gonçalo Velho
141:
140:
135:
131:
127:
123:
117:
115:
111:
107:
103:
97:
95:
91:
87:
83:
79:
75:
74:Gonçalo Velho
68:
66:
61:
59:
55:
51:
47:
44:
39:
37:
33:
29:
25:
21:
1092:Jean Alfonse
1020:Fernão Nunes
1010:Domingo Paes
1005:Diogo Veloso
801:Pero Escobar
736:João Infante
716:João da Nova
711:João da Gama
656:Fernão Gomes
651:Fernão do Pó
626:Diogo Soares
571:António Mota
513:Nuno Tristão
457:
448:Diogo Afonso
399:Prince Henry
331:
323:
318:
298:
291:
282:
276:
267:
258:
246:
238:
233:
222:
217:
210:
205:
193:
185:
155:
139:volta do mar
137:
126:Cape Bojador
118:
98:
93:
89:
85:
70:
64:
63:
46:cartographer
40:
19:
18:
1030:João Cabral
913:Silva Porto
741:João Serrão
468:Diogo Gomes
96:II (1437).
1160:Categories
1082:George Ura
949:Brás Cubas
944:Borba Gato
731:João Grego
606:Diogo Dias
443:Dinis Dias
169:References
165:of 1375).
28:Portuguese
796:Pero Dias
591:Diogo Cão
478:Gil Eanes
922:Americas
819:Overland
389:Maritime
340:Archived
102:toponyms
54:Mallorca
32:Atlantic
249:(1901:
241:(1845:
130:Madeira
78:Seville
43:Catalan
826:Africa
337:A.N.C.
306:
197:Mees,
158:Azores
106:Silves
58:Azores
36:Azores
110:Lagos
82:Sines
983:Asia
304:ISBN
251:p.71
243:p.31
199:p.70
227:v.1
52:of
24:fl.
1162::
177:^
94:XV
48:,
376:e
369:t
362:v
326:.
312:.
253:)
90:X
86:V
22:(
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