He is married to Catharina de Haas.
Permission for the marriage has been obtained in Deventer on August 18, 1770.Source 2
They were married in church on September 3, 1770 at Deventer (attestatie naar Zutphen).Source 218-8-1770 Steven ten Cate jm alhier en Catharina de Haas jd te Zutphen. Op att. van Zutphen. Att.geg. op Zutphen den 3 sept. 1770.