Pat

Pat is an English short form of Patrick or Patricia, both of which trace back to the Latin patricius, meaning nobleman or member of the patrician class. Patrick was borne by the fifth-century Romano-British missionary who became the patron saint of Ireland, giving the name enduring popularity throughout the English-speaking world. As a standalone given name, Pat has been used independently for both men and women since at least the twentieth century. Related forms include Patty, Paddy, Tricia, and Patricia.