He succeeded his father as Earl of Castlehaven, Baron Audley, and Baron Audley of Hely on 9 August 1700.
He married, on 14 May 1722, Elizabeth Arundell (1693-1743), daughter of Henry Arundell and his wife, née Elizabeth Panton.
They had two sons, and at least one daughter:
He is buried at St. Sulpice in Paris.
{| border="2" align="center"
|-
|width="30%" align="center"|Preceded by:
James Tuchet
|width="40%" align="center"|Earl of Castlehaven
|width="30%" align="center"|Followed by:
James Tuchet
|}