During the Middle Ages, the area around Aberglasney was the centre for bloody battles, including a particularly violent offensive in 1257. Nearby fields still carry the memories with names such as Cae Tranc (field of vengeance) and Cae'r Ochain (groaning field).

Until the fifteenth century we depend on tradition for our knowledge of the people who owned Aberglasney. From that point onwards the property was sold to a different family roughly at the start of each new century and a strange seesaw pattern of wealth alternating with misfortune emerging.

The documents are missing, but Bishop Rudd is generally thought to have acquired the Aberglasney estate sometime around 1600. The house stayed in the family until 1710 when accumulated debts forced Sir Rice, the Bishop's grandson, to sell the estate to Robert Dyer. His grandson Robert Archer Dyer inherited in 1752 but already Aberglasney was once again draining the family coffers and finally Aberglasney was put up for sale in 1798.

In 1803 T