Abraham Devonsher, the Cork banker and Member of Parliament for Rathcormac, county Cork, died without heirs in 1783 and his estate was inherited by his grand nephew John Newenham, who took the additional name of Devonsher. John Devonsher Newenham married Cornelia Schuyler and had a son Arbraham John Devonsher. Abraham J. Devonsher sold Kilshannig to the Roches when he ran into financial difficulties and at the time of Griffith's Valuation was resident at Mountain Lodge, Ballyda, Rathcormack. At the time of Griffith's Valuation Abraham Devonsher held an estate in the parishes of Gortroe, Rathcormack and Carrigtohill, barony of Barrymore, county Cork. In the 1870s Abraham John Devonshire owned 1,015 acres in county Cork.