András was the son of Bálint Nagy-Lázár de Csíkszenttamás but his mother is unknown. The date and place of his birth have not been found.
His wife is not known. They were married, but the date and place have not been found. Their seven known children were Bernard (?-?), Ferenc (?-?), István (?-?), János (?-?), Katalin (?-?), Mihály (?-?) and Anna (?-?).
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