Sarah McCoster was born 16 May 1680 in Somerset, Maryland, United States to Edwarde McCoster (1640-1709) and Anne Orvis (1647-1708) and died 31 March 1711 Somerset, Maryland, United States of unspecified causes.
Children
| Name | Birth | Death | Joined with |
| Ann Dykes (1700-1740) | 27 March 1700 Dorchester County, Maryland, United States | 2 March 1740 Anson County, North Carolina, United States | James Bounds (1696-1775) |
Siblings
| Name | Birth | Death | Joined with |
| Sarah McCoster (1680-1711) | 16 May 1680 Somerset, Maryland, United States | 31 March 1711 Somerset, Maryland, United States | Edward Dykes (1684-1715) |