The Vaughans of Trawsgoed traced their line to Collwyn ap Tango, the founder of one of the royal tribes of north Wales.
Despite the existence of closer alternatives, John Vaughan was schooled at Worcester, where Henry Bright instructed him in his ‘grammar learnings’.
While Vaughan flourished at the Inner Temple, his family’s position in Cardiganshire was also strengthening. His father became sheriff in 1619, the first of the family to hold the position, and in 1624-5 the Member married Jane Steadman of Cilcennin, on the same day that his father married Jane’s widowed mother, Anne.
Vaughan made his first speech on 20 May, as the Commons debated alterations to the Petition of Right following a conference with the Lords. Vaughan resisted attempts to change the Petition’s phrasing, and was supported in this by his mentor Selden.
A year after the dissolution, Vaughan was called to the bar. He thereafter practised mostly in Star Chamber where, his son informs us, ‘he soon became eminent’.
Vaughan succeeded to the estate after his father’s death in 1635 and was charged with securing marriages for his two sisters as well as the guardianship of his nine-year-old stepbrother, Edward.
