Unfortunately, I do not find your JOY surname in my database. However, as you surmised for your family, our family has often used the TRUXT*U*N (note the *u* instead of *o*) surname as a given or middle name; for instance, my grandfather is Truxtun Benbridge Shreve I. My family members are named after our ancestor Capt. Thomas Truxtun II, USN (1755-1822), (sometimes known by his honorary title, "Commodore"). Truxtun was a privateer during the Revolutionary War; in 1788 he commanded the first China clipper ship ("Canton") from Philadelphia to Canton, China; and he directed the construction of and commanded one of the first U.S. Navy ships, "Constellation," between 1797 and 1801. His main claims to fame are winning two famous naval battles in the Quasi-war with France: He captured the French ship "L'Insurgente" on 9 feb 1799 in the Caribbean Islands, and the French ship "La Vengeance" on 1 feb 1800 off the West Indies. On 17 March 1800, he was awarded a gold medal by Congress for his victories. Depending on when your Truxton Joy was alive, perhaps he was named after Capt. Truxtun; I have documented TRUXTUN place names in several states and usually they are named after Capt. Truxtun. There is a well-documented book about Capt. Truxtun: Eugene Ferguson (1956) "Truxtun of the Constellation," Johns Hopkins Press. The book was reprinted in 1982 by the Naval Institute Press, Annapolis, MD. I have 34 TRUXTUN surnames and many more instances of TRUXTUN as a given name in my database. I would be happy to share more information. I have also collected some information on the TRUXT*O*N surname.