His younger brother, the 7th Baron, represented Ludgershall and Wells in the House of Commons.

In 1765, he was created Baron Digby, of Sherborne in the County of Dorset, in the Peerage of Great Britain, with remainder to the male issue of his father.

In 1790, Lord Digby was further honoured when he was made Viscount Coleshill and Earl Digby also in the Peerage of Great Britain, with remainder to the issue male of his body.

His son, the 10th Baron, sat as a Conservative Member of Parliament for Dorset.

Edward St Vincent Kenelm Digby (born 1985).