James married Mary Ann Martinangele Peto Grimball on 17 Dec 1818. Mary (daughter of Isaac Martinangele and Elizabeth Conyers Ladson) was born on 12 Dec 1791 in Daufuskie Island, Beaufort, South Carolina, USA; died on 6 Oct 1854 in Daufuskie Landing, Beaufort County, South Carolina, United States of America; was buried in Daufuskie Landing, Beaufort County, South Carolina, USA. [Group Sheet] [Family Chart]

1. Mary Elizabeth Ann Peto Chaplin was born on 18 Sep 1819 in Savannah, Chatham, Georgia, USA; died on 8 Jan 1899 in Daufuskie Island, Beaufort, South Carolina; was buried in Savannah, Chatham, Georgia, USA.
2. James Peto was born in 1820; died in UNKNOWN.
3. John Francis Grimball was born on 15 Sep 1824 in South Carolina, United States; died on 12 Jan 1899 in Savannah, Chatham County, Georgia, USA; was buried in Savannah, Chatham County, Georgia, United States of America.
4. William P Grimball was born on 16 Jan 1827; died on 18 Jun 1847; was buried in Daufuskie Landing, Beaufort County, South Carolina, USA.
5. B Jenkins Grimball was born in 1829; died on 16 Oct 1836 in Daufuskie Island, Beaufort, South Carolina, USA; was buried in Daufuskie Landing, Beaufort County, South Carolina, USA.
6. Paul L Grimball was born in 1831; died on 12 Nov 1836 in Daufuskie Island, Beaufort, South Carolina, USA; was buried in Daufuskie Landing, Beaufort County, South Carolina, USA.