sentences:  In 1737 Richard, the 9th Viscount, died and Henry's elder brother Charles, already comte and earl, succeeded as the 10th Viscount in the Irish peerage.On 24 October 1741 Henry's elder brother Charles, the 10th Viscount Dillon and Colonel of Dillon's Regiment, died in London without surviving children.He was buried in St Pancras churchyard where Catholics were usually buried in London.