<Li> James Butler, 4th Earl of Ormonde (died 1452) </Li> <Li> James Butler, 5th Earl of Ormonde (1421--1462) </Li> <Li> John Butler, 6th Earl of Ormonde (died 1478) </Li> <Li> Thomas Butler, 7th Earl of Ormonde (died 1515) </Li>

Where did the last name butler come from