Trevor Howard, Trevor Nunn, Hugh Trevor-Roper. Trey may be used as a nickname for a child who has the same name as a parent and a grandparent. Like Trey, Tripp is used as a nickname for a child named for parent and a grandparent. A good choice if the child is destined for an exclusive prep school. Tristan de Cunha, Tristram Coffin, Tristram Shandy.
Troy weight refers to a system of measuring precious metals.
According to Greek mythology. Troilus was killed by Achilles. Troy Donahue, Helen of Troy, Troilus and Cressida. Truman Capote, Harry S. Truman. But you may feel too tuckered out to worry about details.