He was a son of Robert Teuwis (Matthew in English) Van Deusen and Cornelia Van Buren. The date of birth given here is his birth or baptismal date. He may have been born in Albany or Columbia County. He married Ariaantje (Harriet in English) Mulder-Muller on March 21, 1724/5 at the Reformed Church of Linlithgo-Livingston, Columbia County, New York. To the best of my knowledge she was a daughter of Cornelius Stephanus Mulder-Muller and Hittitje Pieterse Loockermans. Tobias and Ariaantje probably had eight children including my ancestor Johannes Tobias Van Deusen who was baptized May 30, 1728 at the Dutch Reformed Church of Claverack, Columbia County, New York along with his twin Cornelis Tobias Van Deusen.

Tobias and Ariaantje built a stone house on the Van Deusen property which is on the present prison road where Van Deusen Road branches off. This Van Deusen Road is no longer used and it is in dreadful shape. The house later got a brick addition and then a wooden addition. I believe it was built in 1746.

Although I have no paper which says Tobias is buried in the Van Deusen burial ground in what is now a cornfield across from Spook Rock, I have to believe it is true that he is buried on his own property where his brother Robert (born in 1700) is buried and where some of his descendants are buried. There are unidentified tombstones and one of them could be his and one that of his wife.