Family of Emily Sibley Watson
George Crawford Clark was the husband of Harriet Seymour Averell Clark, Isaac Seymour Averell's sister, and thus he was Emily Sibley Watson's brother-in-law by her first marriage.
Clark was a banker and was descended from a wealthy New York City family.
Mr. & Mrs. Clark gave Emily a Tiffany silver heart at her wedding to James Sibley Watson.