Short answers, pulled from the story.
Thomas Butler entered the world in 1426 as the third son of James Butler, 4th Earl of Ormond. His mother was Joan de Beauchamp who died in August 1430 when Thomas was only four years old.
Two elder brothers preceded him into the earldom but both left no legitimate children to inherit their titles. This succession pattern meant Thomas inherited the family estates despite being the youngest male child.
Henry VII restored the family status during his first Parliament in November 1485. The new king abrogated all previous statutes that had labeled them traitors allowing Thomas to claim his position as the 7th Earl of Ormond.
The earl took on the role of Lord Chamberlain to Catherine of Aragon starting in 1509. He maintained this court position until 1512 when he stepped down from the post.
He had two daughters named Anne and Margaret who inherited the Butler estates in England after his death. Margaret married Sir William Boleyn and produced six sons and five daughters including Thomas Boleyn whose daughter became Queen Anne.