Dorottya was the daughter of Imre Derencsényi and Jusztina Gálszécsi. The date and place of her birth have not been found.
Her husband was Miklós Széchy de Rimaszécs. They were married, but the date and place have not been found. Their five known children were Péter (?-?), Tamás (?-?), László (?-<1508), Katalin (?-?) and Hedvig (?-?).