The Huguenot Society of the Founders of Manakin In the Colony of Virginia (http://manakin.addr.com/) lists both Theodore and Hillaire as Huguenots settling in early colonial Virginia, though not at Manakintowne.
Hillaire Rousseau is listed under Registered Lineages, including son William father of Henry
Hillaire Rousseau is listed under Qualified Huguenot Ancestors of the National Huguenot Society.