Leader (Mount Leader & Dromagh Castle)
- The senior branch of the Leader family descended from Henry Leader who bought estates in county Cork at the end of the 17th century. In 1741 his third son, Henry, married Christabella, eldest daughter of William Philpot of Dromagh, county Cork. Post 1760 their second son, William, bought Mount Leader from his cousin, John Leader. William's son, Nicholas Philpot Leader, married Margaret, daughter and co heiress of Andrew Nash of Nashville or Rosnalee, county Cork. This marriage brought another property into the possession of the Leader family. By the time of Griffith's Valuation Nicholas Philpott Leader II, Member of Parliament for county Cork 1865-1868, held the Dromagh Castle estate in the parishes of Drumtarriff and Kilbrin, barony of Duhallow. Lewis writes that Nicholas Leader had extensive and valuable "colliers" at Dromagh and Dysert. In the 1870s Nicholas P. Leader's Dromagh Castle estate amounted to 5,632 acres. He died a bachelor in 1880. The widow of his brother William of Rosnalee owned 5,586 acres in the 1870s and her son, William Nicholas Leader, succeeded to Dromagh Castle. He died without heirs in 1931 and Dromagh and Rosnalee were acquired by the Land Commission from his grand nephew. Nicholas P. Leader's younger brother, Henry, inherited Mount Leader from their father. At the time of Griffith's Valuation Henry Leader is recorded as one of principal lessors in the parishes of Cullen, barony of Duhallow, Ballyvourney, Clondrohid, Drishane, barony of West Muskerry and Henry Leader also held land in the parishes of Mourneabbey, barony of Barretts, Castletownroche, barony of Fermoy, Youghal, barony of Imokilly. In the 1870s Henry E. Leader of Mount Leader owned 1,597 acres, Henry Leader of Clonmoyle (son of Nicholas P. Leader) owned 2,418 acres, John Leader of Queenstown owned 1,130 acres and William Leader of Western Road, Cork owned 951 acres in county Cork. In June 1877 the estate of the trustees of the marriage settlement of Henry Leader and Sarah Woodcock (in 1835) and of a family settlement of 1866, amounting to 2,651 acres in the baronies of Duhallow and Muskerry, was advertised for sale. This estate was held from Baron Lisle and from the Reverend Edward Hatch Hoare. The Irish Times gave details of the purchasers, who included some of the existing tenants. Henry Leader's interest in the lands of Clonmoyle East, barony of East Muskerry, Castlewidenham and Ballygarrett, barony of Fermoy, was advertised for sale in November 1882 and his interest in the lands of Fermoyle, barony of Duhallow in July 1883.
- A family living in the Kanturk area of county Cork in the 18th century. Their estate at Nashville, parish of Dromtarriff, barony of Duhallow, passed to the Leader family through the marriage of Margaret, daughter of Andrew Nash, to Nicholas Philpot Leader in 1807. In 1801, Margaret's sister, Elizabeth, had married Vice Admiral Henry Evans of Oldtown House.
Horgan (Co Cork)
- Denis Horgan held land in the parish of Macroom, barony of West Muskerry, county Cork, at the time of Griffith's Valuation. In May 1854 the estate of Denis Horgan and Russell Fitton, trusteees of the estate of Timothy O'Callaghan Horgan, at Carrigullly, barony of West Muskerry, was advertised for sale. It amounted to one divided moiety of over a 1,000 acres held on a lease from Henry Leader to John Horgan dated 1801. The property was partitioned in 1822 and the lease renewed to Russell Fitton and Denis Horgan in 1850. In the 1870s the representatives of Eugene Horgan of Larch Hill, Killinardrish, owned 1,166 acres in county Cork.