He was a General of the Horse and was equerry to King William III at the Battle of the Boyne in 1690.

His son, the fifth Baronet, served as Treasurer of the Chamber, as Captain of the Honourable Band of Gentlemen Pensioners and as Lord Lieutenant of Norfolk.

He served as Governor of Madras, as Secretary of State for War and the Colonies, as Chancellor of the Duchy of Lancaster, as Joint Postmaster General and as President of the Board of Control.

In 1797 he was summoned to the House of Lords through a writ of acceleration in his father's junior title of Baron Hobart.

Hew Adam Dalrymple Hamilton Haldane-Duncan-Mercer-Henderson and Edith Isabella Mercer-Henderson.

He was childless and was succeeded by his second cousin once removed, the tenth Earl and (As of 2010[update]) present holder of the titles.

George Augustus Hobart-Hampden, fifth son of the sixth Earl (and the eldest from his second marriage).

Henry Hobart, younger son of the first Earl from his second marriage, represented Norwich in Parliament and served as Chairman of Ways and Means.

Augustus Charles Hobart-Hampden, third son of the sixth Earl, was a vice-admiral in the Royal Navy.

Also, Henrietta Hobart, daughter of the fourth Baronet and sister of the first Earl, was a longtime mistress of King George II.

The heir presumptive is the present holder's fourth cousin once removed Sir John Vere Hobart, 4th Baronet of Langdown (b.