Machna was the daughter of unknown parents. The date and place of her birth have not been found.
Her husband was Tas z Boskovic. They were married, but the date and place have not been found. Their six known children were Anna (?-<1446), Beneš (?-c1425), Jindřich (?-1420), Jan (?-1447), Jaroslav (?-1420) and Oldřich (c1414-1434).