Per 1900 census William was adopted.
The County Review (Riverhead,N.Y.)
October 3, 1913Riverhead - Alexander Hamilton Jenks died very suddenly at the home of his daughter, Mrs. R. H. Cooper, in this village, last Friday, of a complication of diseases.
He was a resident of Presque Isle, Maine, and was seventy-two years of age. Mr. and Mrs. Jenks arrived at the Cooper home September 21, and intended spending the winter with Mr. and Mrs. Cooper. Nr. Jenks was for some years cashier of the Presque Isle Bank, but retired from business twenty years ago.
He is survived by his widow, and three daughters, Mrs. Watt L. Ormsby, of Brooklyn, Mrs. Cooper and Miss Katherine G. Jenks, of this village.