[2] Littellton Powis married Agnes Carter on 3 December 1674 at the Temple Church of England, London.
[3] In 1688, Powys took the side of William of Orange, reading the Prince's declaration at Shrewsbury, and, when the new government was established, was appointed a second justice on the Chester circuit in May 1689.
While a member of this court, he was one of the majority of judges who heard the leading case Ashby v White, arising out of the Aylesbury election, and decided against the plaintiff.
He was characterized as being a dull, respectable judge, not so able as his brother, Sir Thomas Powys, but less of a political partisan.
[4] Powys was patron of Bitterley Church, where in 1707 he set up a gallery at the west end, and in which he was buried after his death in 1732.