- Joseph Power writes that the house Barntick, parish of Clareabbey, barony of Islands, county Clare, dates from the mid 17th century and that the property originally belonged to the O’Briens Earls of Thomond. Barntick was leased to the Hickmans from circa 1620s and by the mid 17th century they held other townlands in the parish. Moland’s survey states that Barntick had on it ‘a good house, stable, barn and other out houses’. By the mid 18th century the Hickmans owned almost 3,000 acres in the parishes of Clareabbey and Killone, barony of Islands and controlled the village of Clare. They also held land in many other parishes but by the end of the 1750s their estates were heavily mortgaged. Colonel Robert Hickman of Barntick died without heirs in 1757 and his estates were sold in 1763. The purchasers in the parishes of Clareabbey and Killone included Sir Lucius O’Brien and others and involved a legal dispute with Poole Hickman of the Kilmore branch of the family. The Peacocke family bought Barntick and Ballaghafadda and the town of Clare.
- Burke records the purchase by George Peacocke of an estate in the barony of Pubblebrien, county Limerick, in the reign of Charles II. From his nephew descend the Peacock of Graige and Fort Etna, county Limerick and Barntic, county Clare. The Peacocke family owned an estate centred on Barntick, county Clare, in the second half of the 18th century and the early 19th century. George Peacocke bought the property from the sale of the Hickman estate in the 1760s. He died in 1773 and was succeeded by his son Joseph who was a Justice of the Peace and at one time High Sheriff of county Clare. Joseph Peacocke was knighted in 1800 for his support of the Act of Union and died in 1812. The estate was divided between his two sons Sir Nathaniel and the Reverend William. By the 1820s the estate was put up for sale by the Court of Chancery. Joseph Power writes that it was about this time that the Roche family of Carass, county Limerick purchased the property. Sir Francis Peacocke 3rd Baronet still owned some land in the parish of Crecora, barony of Pubblebrien, county Limerick at the time of Griffith's Valuation.