Background and early career
He was born around 1583, eighth son of John Ryves of Damory Court, near Blandford, Dorset and his wife Elizabeth Mervyn. He belonged to a highly talented family: one of his brothers, Sir William Ryves, became Attorney General for Ireland and a judge of the Court of King's Bench (Ireland); another brother, George, became Master of New College, Oxford. Dr. Bruno Ryves, royal chaplain and Dean of Windsor was a first cousin; and Sir John Davies, William Ryves' predecessor as Irish Attorney General, was a family connection through his wife.
Ryves entered Winchester College in 1590 and became a fellow of New College, Oxford in 1598. He took his degree of Bachelor of Common Law in 1605 and his doctorate in 1610; he is also said to have studied for a time in France. In 1612 he became an advocate of Doctors' Commons.
Thomas and his brother William relied on their family connection with Sir John Davies to advance their careers. In 1612 Thomas accompanied Davies on his return to Ireland and did "good service" in helping him manage the Irish Parliament of 1613-15, where after a fierce struggle Davies was elected Speaker of the House of Commons. In 1617 Thomas was appointed judge of the Irish Court of Faculties. As a result he became embroiled in a long dispute with James Ussher, Archbishop of Armagh, and other leading clerics, who argued that only a clergyman in holy orders should hold the office. Although Thomas is said to have been greatly respected in Ireland for his legal ability, he eventually resigned the office and returned to England in 1621.
Ryves built up a large practice in the English Admiralty Court, and was made King's Advocate in 1625. In 1626 he became a master of the Court of Requests; in 1636 he became the Admiralty judge for Dover, and later judge for the Cinque Ports.
On the outbreak of the English Civil War he joined the King's side, and despite his age is said to have fought with great courage in several battles and been wounded. In 1648 the King chose him as one of his commissioners to negotiate with Parliament. He died in London early in 1652 and was buried in St. Clement Danes. His wife belonged to the Waldron family of Leicester This was one of several marriages between the two families: she was probably a sister of Dorothy Waldron. the second wife of Thomas's brother William. They had no children.
Ryves was renowned for his knowledge of both civil law and common law, his wider learning and his skill in Latin. He enjoyed the trust and confidence of King Charles I, and displayed courage and loyalty to the Crown in his later years, although Archbishop Ussher disliked and distrusted him.
Ryves published books on law and naval history, and a lengthy defence of King James I's administration in Ireland. Probably his best known work is The Poor Vicar's Plea (1620), an argument in favour of the right of Irish vicars to receive tithes.
- Pollard, Albert Frederick (1897). . In Lee, Sidney (ed.). Dictionary of National Biography. 50. London: Smith, Elder & Co.
- Ball, F. Elrington The Judges in Ireland 1221-1921, John Murray London 1926
- This was both a political and a physical struggle, since Davies, who was a very fat man, quite literally sat on his rival for the office, Sir John Everard, threatening to crush him unless he accepted defeat.
- Chalmers Biographical Dictionary 1812