Boscawen was the eldest son of Hugh Boscawen, 1st Viscount Falmouth, by Charlotte Godfrey, daughter of Colonel Charles Godfrey, Master of Jewel Office, by Arabella Churchill, daughter of Sir Winston Churchill and sister of the Duke of Marlborough.
Falmouth died in February 1782, aged 74, and was succeeded in the title by his nephew, George.
[1] He had no children in his marriage, but a family of three outside it: Hugh, Jane and Florentius (male) - apparently born in the 1750s.
Lord Falmouth, was, it is understood, to have been very proud of his children and a wise, generous and devoted father.
some time since (Clerk) of the (Cheque) of His Majesty’s Guard of Yeoman of the Guard and now (?Member) of Parliament for the Borough of St. Mawes in the County of Cornwall and given him a qualification to sit in Parliament and his brother Florentius Boscawen now a Lieutenant in his Majesty’s Third Regiment of Foot Guards and their sister Jane Boscawen late a Parlour Boarder at Blacklands School of Chelsea afterwards living with Lady Leith and now with Mrs. Hawksworth of Bromley Kent as my sons and daughter and given and directed them to take and use my name and Arms (the Arms of Boscawen) without any alteration or addition I also give my said adopted sons and daughter the said Hugh Jane and Florentius thirty thousand pounds stirling that is to say ten thousand pounds each to my said son Hugh Boscawen and daughter Jane ………..” [he then goes on to make special arrangements for payments to Florentius until he reaches the age of 21].