William Jay Schieffelin (New York City, November 30, 1891 – May 1, 1985) was an American businessman and philanthropist.
[1][2] William Jay Schieffelin married Annette Markoe (1897–1997) of New York City in 1918.
[1][2] From 1916 to 1918, William Jay Schieffelin was Lieutenant at the 12th New York Infantry at the Mexican border in 1916 and served from June 1916 to March 10, 1917 at Camp McAllen, Texas.
He was assigned to 12th Field Artillery Regiment and departed for Europe, January 11, 1918, aboard the USS Olympic, and entered combat in March 1918.
[2][1] In April 1918, William Jay Schieffelin returned to New York, on board the USS Finland, to be an instructor of Field Artillery, at Camp Jackson, South Carolina.