cases of treason in County Dublin. In 1419 he was given custody of the lands at Stillorgan held by Robert Derpatrick, recently deceased, during the minority of Robert's brother and heir Stephen. He obtained a further grant on Stephen's death. He apparently experienced some difficulty in establishing control of Derpatrick, as in 1423 he felt obliged to remind the Crown of the grant. In 1420 he witnessed the charter by which King Henry V guaranteed certain liberties and privileges to the Mayor and citizens of Dublin. In the early stages of the Talbot-Butler feud, the clash between two powerful magnate families which dominated Irish public life for decades, Tynbegh was a member of the Talbot faction, headed by John Talbot, 1st Earl of Shrewsbury, and thus an opponent of James Butler, 4th Earl of Ormonde. He was seen very much as a Talbot "client", and owed his career advancement in its later stages to the fact. Ormonde as a result managed to have Tynbegh dismissed from the Bench, but after Tynbegh's return to office in his last years, they were able to work together amicably. He spent some time in France in 1420-21. He was appointed Treasurer of Ireland in 1421, having regularly served as Deputy Treasurer. He was still living in March 1424, when he ordered the Archbishop of Dublin to make a grant of the lands formerly owned by Thomas Leger to Richard Vale; but he died later the same year. References 1424 deaths 15th-century Irish judges Irish people of Welsh descent Year of birth unknown Lords chief justice of Ireland Chief Barons of the Irish Exchequer Chief Justices of the Irish Common Pleas Year of birth uncertain