Born in the West Midlands region of England, he held seats in southern Wales at The Leys, near Monmouth, and Velindre House, in Whitchurch, Cardiff.

His other holdings included the Hadnock estate, purchased in 1822, after which he demolished the original house, and used the materials to rebuild and extend The Leys property on the other side of the River Wye.

[7] He constructed a trestle-work iron tower, 70 feet (21 m) high, as an observatory at the deer park of The Doward, Whitchurch.

[8] Unmarried, Blakemore adopted his nephew, Thomas William Booker, and raised him at Melingriffith Tin Plate Works.

[10] He was survived by his nephew, T. W. Booker, who added Blakemore to his surname, took over the management of Melingriffith, and became Member of Parliament for Herefordshire.