The petition fixes Willem at the village fort of Schenectady as early as 1676. There he md. Neeltje, a daughter of the well known Theunis (i.e. Anthony) Corneliszen Swart, whose wife was Elizabeth van der Linden, and who, as early as 11 August, 1676 had been appointed magistrate there by Governor Andros (?) (NY Col. Hist. Documents, v. 13, p. 500). All the Schenectady early church records, prior to 1700, as well as the early church records of Beverwyck or Albany are lost; but subsequent marriage entries show that several of Willem's children were born at Schenectady and there he early appears as a land owner. In 1687 he borrowed 600 florins of the Church funds, at interest, such loans being made by the elders as a safe investment of surplus monies. After the massacre in 1690, he sold his lot on the present State St. to Wm. Appel, an innkeeper, but as late as 1715 he acquired a new lot from Evert Banaker. (See Pearson's Schenectady Patent, 87, 155, 156, 384, 386). In 1695, June 7th, he had a daughter Helena (no. 10) baptized at Kingston and in 1699, May 7th, another daughter, Marytje (no. 12). A ? daughter Ariaentje was baptized at Albany in 1685, August 2nd.
His relations to the Minnisinck Indians were early, as 10th October, 1698, he and Arian "Rosment (?)" (i.e. Roosa) petitioned the Governor to set a hearing at which several Indian Sachems, of Little Menisinck, might make some propositions. It is signed "Willem Titsoort." (NY Col. manuscripts, 42, p. 7 1). Later Willem seems to have settled in Dutchess Co., NY, the people of which resorted to Kingston for baptisms. Poughkeepsie then was a hamlet of some dozen or twenty families, and Smith's history of Dutchess Co. gives illustrations of the need of a good blacksmith, even ploughshares being carried to Kingston for repair.