From History and Proceedings of the PVMA, Vol. 1, 10th annual meeting, 1879, pg. 483:
Ishmael Turner, slave of Seth Field, Esq., farmer. Bought in Boston. The first work he was set at was turning hay; they said he would make a good turner, and so named him Turner, but when he was baptized they called him Ishmael, hence Ishmael Turner. In December, 1776, Ishmael Turner with others, was enlisted as a soldier to go to Danbury.
Ishmael enlisted in December of 1776 and served for 3 months and 15 days. From April 2, 1777 to April 1, 1780, he served in the Continental Army.
An Ishmael Turner is listed in the 1790 census for Winchester, New Hampshire, with three others in his household and another man by that name is listed in the 1790 census for Chester, Vermont, also with three others in his household.
Ishmael Turner of Monson, Massachusetts, married Chloe Danford (or Danforth) of Conway, Massachusetts on March 25, 1793.