[2][3] Henry Vaughan married, at some point between 1609 and 1610, Sage, the daughter and heiress of John Gwyn William of Derwydd, Llandybie in Carmarthenshire, and the widow of Edward Rice of Newton.
[1] Vaughan was returned without incident at the 1626 election, and again in 1628, sitting until 1629 when King Charles decided to rule without parliament.
[4] From November 1642, Vaughan began raising a regiment in Carmarthenshire to fight for the Royalist cause under his nephew, the Earl of Carbery.
[1] He was Sergeant-Major-General of the Royalist forces in Pembrokeshire from 1643 until he was defeated at Pill in February 1644 by the Parliamentarian leader, Rowland Laugharne.
He established his headquarters at Haverfordwest, but abandoned the town in March 1644, supposedly after a stampede of cattle was mistaken for an attack by Laugharne's troops.
[2][3] He was given nominal fines of £160 on 27 April 1644, and then £500 on 20 August 1645 by the Committee for Compounding with Delinquents, after his estate was valued at £600 a year.