Algernon Greville (c. 1677 – 28 April 1720) was the second son of Fulke Greville, 5th Baron Brooke, son of Robert Greville, 2nd Baron Brooke, and his wife Sarah Dashwood. He married Mary, daughter and coheir of Lord Arthur Somerset, the youngest son of Henry Somerset, 1st Duke of Beaufort. Their daughter, Mary (20 December 1713 – 1 March 1786), who married Shuckburgh Boughton (d. 1763) in 1736, had Sir Charles William Rouse Boughton, 1st and 9th Bt.
