This appears to be the only tenable reason that has been assigned for the change of the family name from Calcraft to Schoolcraft.
When far advanced in life, he went to live with his son William, on the New York grants on Otter Creek, in the rich agricultural region south of Lake Champlain--which is now included in Vermont.

Here he died at the great age of one hundred and two, having been universally esteemed for his loyalty to his king, his personal courage and energy, and the uprightness of his character.
After the death of his father, when the revolutionary troubles commenced, William, his youngest son, removed into Lower Canada.

The other children all remained in Albany County, except Christian, who, when the jangling land disputes and conflicts of titles arose in Schoharie, followed Conrad Wiser, Esq.

(a near relative), to the banks of the Susquehanna.

He appears eventually to have pushed his way to Buchanan River, one of the sources of the Monongahela, in Lewis County, Virginia, where some of his descendants must still reside.