John George Blencowe (28 February 1817 â 28 April 1900) was a British Liberal Party politician.
Blencowe was the son of Robert Willis Blencowe and Charlotte Elizabeth Poole. He married Frances Campion, daughter of William John Campion (the younger) and Frances Read Kemp, in July 1857. Together they had eight children:
He was elected MP for Lewes at a by-election in 1860 but stood down at the next election in 1865.
Blencowe was also a justice of the peace and deputy lieutenant for Sussex.