1st Lord Swynnerton. On September 19, 1310, he was of those whose duty it was to perform knight service for the earl of Lancaster's fees. On October 16, 1313, he was pardoned for his share in the execution of Gaveston. On October 6, 1315, he was granted licence to crenellate his house of Swinnerton. On August 30, 1321, he was appointed keeper of the Tower of London. He was summoned to Parliament on December 20, 1337, as Rogero de Swynn'ton, whereby he is held to have become lord Swynnerton.