By the time of the Domesday Book, what is now the Mapledurham estate comprised two separate manors, Mapledurham Gurney and Mapledurham Chazey. Mapledurham Gurney was purchased by Richard Blount in 1490, and has remained in the ownership of his descendents ever since. Richard Blount's grandson, Sir Michael Blount, bought Mapledurham Chazey in 1582 and merged the two estates. Sir Michael was also responsible for the building of the current Mapledurham House on the site of the manor house of Mapledurham Gurney. The manorial seat of Mapledurham Chazey no longer exists, but is believed to have been on or near the site now occupied by Chazey Court Barn.