João was born before 1655.
Assento de casamento de sua filha Elena Pereira (marriage record of his daughter Elena Pereira):
Arquivo Distrital de Vila Real - ADVRL (https://digitarq.advrl.arquivos.pt) - Paróquia de Poiares - Livro de registo de casamentos 1679/1689 - PT-ADVRL-PRQ-PPRG08-002-144_m0007.tif (https://digitarq.advrl.arquivos.pt/Controls/vaultimage/?id=6DCDC30E38EB76583ABB260F6935CC1E)
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