On 28 March 1786, he married Florentina Wrey, third daughter of
Sir Bourchier Wrey, 6th Baronet, After a lingering illness Long died aged 73, at Rood Ashton House, six weeks after his wife, and was interred in the family's crypt at
St Mary's Church, Steeple Ashton. Their children included: •
Walter (1793–1867), the eldest son, was also a member of parliament, representing
North Wiltshire • Ellen, the eldest daughter, married John Walmesley in 1812; their children included
Richard Walmesley (1816–1893), a lawyer and latterly owner of
Lucknam Park, Wiltshire • Florentina (Flora), having been previously engaged to Henry Cobbe (uncle of
Frances Power Cobbe), who had died the day before the proposed marriage, formed a strong attachment to the then-elderly poet
George Crabbe. Flora and her aunts were frequent visitors of novelist
Jane Austen, who referred to Flora as her 'cousin', though their exact relationship is not known. Austen never met Crabbe, but nursed a fantasy of becoming his wife. ==Notes==