Mihály was the son of László Széchy de Rimaszécs and Anna Lórántffy de Serke. The date and place of his birth have not been found.
Mihály Széchy de Rimaszécs
László Széchy de Rimaszécs (-<1508)
Miklós Széchy de Rimaszécs
Frank Széchy de Rimaszécs
Dorottya Derencsényi
Imre Derencsényi
Jusztina Gálszécsi
Anna Lórántffy de Serke
György Lórántffy de Serke
Lóránd Lórántffy de Serke (-<1417)
Katalin Lackfi
Zsófia Somosi