[3] He was returned to Parliament for Horsham in 1747, a seat he held until 1763, when he succeeded his uncle George Ingram, 8th Viscount of Irvine in the viscountcy.
[3] In 1768 he was elected a Scottish representative peer, which he remained until his death ten years later.
The eldest daughter, the Honourable Isabella Ingram, married the 2nd Marquess of Hertford and also became the mistress of the Prince of Wales, later George IV.
The work was continued by his widow, who rebuilt the south wing and lived at Temple Newsam until her death in 1807.
There is a portrait of Charles, 9th Viscount Irwin, by Benjamin Wilson, in the collections at Temple Newsam.