In the 1870s, William Armstrong was the owner of over 2000 acres in county Tipperary as well as over 50 acres in county Waterford and 400 in county Limerick. [An Armstrong held lands in the parishes of Tubbrid and Whitechurch, barony of Iffa and Offa West, county Tipperary, from Lord Waterpark at the time of Griffith's Valuation while Armstrong esq is also referred to as the proprietor of townlands in the parish of Ballybacon at the time of the first Ordnance Survey in 1839.] Property in county Tipperary and elsewhere, belonging to John Armstrong, was sold in the Landed Estates Court in March 1862. The purchasers were Messers. Hemphill, Walpole and Davis.
- Baker, Ringwood & Gordon, solicitor's collection, includes plain copy will & grant W. M. Armstrong of Ballydavid, 1889. Small Accs. Index 105, T.11592; National Archives of Ireland
- Irish Tourist Association Survey files: Barony of Gaultier; Waterford County Library
Contemporary printed sources
- HUSSEY DE BURGH, U. H. ''The Landowners of Ireland. An alphabetical list of the owners of estates of 500 acres or £500 valuation and upwards in Ireland''. Dublin: Hodges, Foster and Figgis, 1878. [available online at www.askaboutireland.ie] : 11
- PARLIAMENTARY PAPERS. ''Return of owners of land of one acre and upwards, in the several counties .... in Ireland''. HC 1876, LXXX: 146 (Limerick), 158 (Tipperary), 73 (Waterford)
- ORDNANCE SURVEY NAME BOOKS, County Tipperary: Vol.I, Parish of Ballybacon, p.203
Modern printed sources
- ''Irish Times'': 15 March 1862, p.4.