Sancho I, King of Portugal

Afonso II, King of Portugal, had issue:

Afonso III, King of Portugal, had issue:

Denis the Farmer, King of Portugal, had issue:

Afonso IV, King of Portugal, had issue:

Pedro I, King of Portugal, had issue:

John I, King of Portugal,
mar Philippa Plantagenet [grand-dau of Edward III]
and had issue:

1. Henry the Navigator (and here), born 1394,
   first of the modern sea explorers,
   founded a school for navigators, Portugal, 1419,
   sent ships to explore down African coast,
   had reached as far as Sierra Leone by time of his death 1460,
   tiny Portugal became a world power.

2. Joao of Portugal, had issue:
   1. Isabella of Portugal, mar John II, King of Castile and Leon and had issue.

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