The parents of Colonel William Henry Grice were James Thomas Grice,born about 1750 in Georgetown, SC in about 1750 and died in about 1800. He was married to Mary Martha Bruce Grice on April 27, 1770 in St. Phillip Parish, Charleston, SC.
The parents of James Thomas Grice were Francis Grice and Elizabeth Grice, maiden name unknown. Francis Grice was born in about 1725 in Johnston, N.C. He died in about 1750.