On 16 Aug 1642 Isaac Penington (age 58) was elected Lord Mayor of London.

Before 16 Dec 1661 Isaac Penington (age 77) was tried for High Treason and imprisoned in the Tower of London [Map].

Pepy's Diary. 15 Nov 1665. After dinner who comes in but my Lady Batten, and a troop of a dozen women almost, and expected, as I found afterward, to be made mighty much of, but nobody minded them; but the best jest was, that when they saw themselves not regarded, they would go away, and it was horrible foule weather; and my Lady Batten walking through the dirty lane with new spicke and span white shoes, she dropped one of her galoshes in the dirt, where it stuck, and she forced to go home without one, at which she was horribly vexed, and I led her; and after vexing her a little more in mirth, I parted, and to Glanville's (age 47), where I knew Sir John Robinson (age 50), Sir G. Smith (age 50), and Captain Cocke (age 48) were gone, and there, with the company of [his daughter] Mrs. Penington, whose father, I hear, was one of the Court of justice, and died prisoner, of the stone, in the Tower [Map], I made them, against their resolutions, to stay from houre to houre till it was almost midnight, and a furious, darke and rainy, and windy, stormy night, and, which was best, I, with drinking small beer, made them all drunk drinking wine, at which Sir John Robinson (age 50) made great sport.