 Thomas Chambers Cecil, second son of Brownlow Cecil, 8th Earl of Exeter.Thomas Chambers Cecil led a profligate life, and although for a time an MP he was forced to live abroad in Brussels, where he married Charlotte Garnier, a lady of uncertain origin, said by some to be a Basque dancer.When Henry was born in 1754 he was the heir presumptive to his uncle Brownlow Cecil, 9th Earl of Exeter, and for this reason was sent when still a baby to Burghley House to be brought up.