Corbin served as a member of the Virginia House of Burgesses and was a large landholder, with his estates centered on Peckatone plantation on the Northern Neck. Gawin Corbin's will was admitted to probate on February 12, 1745. He was probably buried on that plantation, and the family graveyard there remains. He provided that his eldest son, Richard, who had made his home at the "Laneville" plantation and would serve both in the House of Burgesses and on the Governor's Council, received lands in Middlesex county, adjoining King and Queen county and 6000 acres upriver in Spotsylvania County. His son John Corbin resided at "Portobago" plantation in Essex County and served as justice of the peace in that county, and received significant lands in Spotsylvania County, but did not seek other public office and so may be best known for marrying the daughter of London merchant Richard Lee (granddaughter of Letitia Corbin Lee) or for siring sons who continued the family's political tradition. However, he died three years after his marriage to Hannah Lee Corbin. The available biographical account does not describe a continuous final medical course. It gives no dependable sequence of treatment and last symptoms from which to reconstruct a more detailed bedside narrative.