Nelson married Nettie M. Sisco. Nettie (daughter of Solomon Sisco and Elizabeth Mary Hardy) was born 15 Nov 1870, Pennsylvania; died 1936, Lenox, Susquehanna, Pennsylvania, United States. [Group Sheet]

1. Simon Elmer Marcy was born 1 Nov 1892, Lenox Township, PA; died Yes, date unknown.
2. Nelson Wellington Marcy was born 4 Jan 1895, Pennsylvania; died Mar 1971, Nicholson, Wyoming, Pennsylvania, United States of America.
3. Giles A. Marcy was born 16 Sep 1904, Pennsylvania; died Feb 1980, Dalton, Lackawanna, Pennsylvania, United States of America.
4. Gertrude Elizabeth Marcy was born 28 Dec 1909, Pennyslvania, USA; died 26 Sep 1989, Pennsylvania, USA.
5. Glen Llewellyn Marcy was born 20 Aug 1900, Lenox, Susquehanna, Pennsylvania, USA; died 18 Jan 1972, Montrose, Susquehanna, Pennsylvania, United States of America.
6. Giles A Marcy was born 1905, Pennsylvania; died Feb 1980, Dalton, Lackawanna, Pennsylvania, United States of America.
7. Glen Llewellyn Marcy was born 20 Aug 1900, Pennsylvania; died 18 Jan 1972, Montrose, Susquehanna, Pennsylvania, United States of America.