The Hennessys were settled at Ballymacmoy from the mid 18th century. In 1786 Wilson refers to "Ballymacboy" as the seat of Mr. Hennessy. A new house was built circa 1820s. By the time of Griffith's Valuation the Hennessy home was valued at £13.5 shillings and was held in fee by James Hennessy. He also owned a flour mill valued at £70 which he leased to Henry B. Foote. This house was still a Hennessy home in the 20th century and the house is still extant.