Hello Robert, I list 6 siblings for Alfred J. Stacy. Grover Cleveland Stacy's father was James Wilson Stacy, his mother was Elizabeth Howard. James Wilson Stacy mostly used the given name Wilson.
James Wilson married a 2nd time after his divorce from Elizabeth Howard, she was Hannah Francis and they had two children that I know of. James Wilson Stacy died in 1916.
James Wilson Stacy was s/o Manfred "Dock" Stacy and Luna Engle (my GGgrandparents). If you would like to exchange data on this family, please contact me direct at email@example.com
Thanks, John Wilson