Throughout the 18th century, several tribes in Virginia lost their reservation lands. Shortly after 1700, the Rappahannock tribe lost its reservation; the Chickahominy tribe lost theirs in 1718, and the Nansemond tribe sold theirs in 1792 after the American Revolution. After losing their reservations, these tribes faded from the public record. Some of their landless members intermarried with other ethnic groups and became assimilated. Others maintained ethnic and cultural identification despite intermarriage. In their matrilineal kinship systems, children of Indian mothers were considered born into her clan and family, and Indian regardless of their fathers. By the 1790s, most of the surviving Powhatan tribes had converted to Christianity, and spoke only English.