In his introduction to the Collection List (No 89) of the De Vesci archive in the National Library of Ireland, Dr A.P.W. Malcomson gives details of the acquisition of the various estates held by the De Vesci family. Most of them, including the estates at Abbeyleix, county Leix, Buttevant, county Cork and the moiety of what became known as the Longford/De Vesci estate at Dun Laoghaire, county Dublin, Passage West, county Cork, Limerick city and county, were inherited from Denny Muschamp, father-in-law of Sir Thomas Vesey. Denny Muschamp was the son of Colonel Agmondisham Muschamp of Buttevant and Ballybricken, county Cork. Michael and his son, Richard Neville Parker, were agents for this estate in the early 19th century and were replaced by the land agency firm of Stewart and Swan, later Stewart and Kincaid, in the late 1830s. In 1835 some of the Longford/De Vesci estate was partitioned, the Veseys retained about 1,500 acres at Monkstown, near Passage West, barony of Kerrycurrihy and Lord Longford took the Ballyhindon estate of about 2,300 acres in the baronies of Fermoy, Condons and Clongibbons. The joint estate is documented in the De Vesci Papers in the National Library. In 1805 lands at Grange East and West, parish of Buttevant, barony of Orrey and Kilmore were settled on Charles Vesey, younger brother of the 2nd Viscount. At the time of Griffith's Valuation the Hon Mrs S. Nugent and John T. Vesci held two townlands in the parish of Buttevant. Mrs S. Nugent [of Portaferry, Co Down] was a daughter of the 1st Viscount de Vesci. The lands of Grange East and West were advertised for sale in May 1860. In the 1870s the De Vesci estate in county Cork amounted to 818 acres, 420 acres in county Dublin and 15,069 acres in county Laois.