- A family who moved from county Limerick to Ballyquin, county Clare when they purchased land from the Earl of Thomond at the end of the 17th century. They married into the O'Brien family of Dromoland and the Smith family of Cahirmoyle, county Limerick. Griffith's Valuation shows the main part of the Arthur estate was in the parishes of Killokennedy and O'Briensbridge, barony of Tulla Lower and in the parishes of Ruan and Killinaboy, barony of Inchiquin, but they also held land in other parishes Clondagad, Killone, Killaloe, Kiltenanlea and Feakle. In the 1860s and early 1870s John Brown and his son Robert L. Brown, acted as receivers for the estate of Thomas Arthur, "a lunatic". This estate was in the baronies of Tulla Upper and Lower and included the mansion house and demesne of Glenomera. In the 1870s Colonel Thomas Arthur of Manor House, Desborough, Market Harborough, Leicestershire owned 2,622 acres in county Clare and Francis Arthur of Dublin owned 10,534 acres in the same county. Reverend Lucius Arthur is described as "of Glenomera" in the 1880s.
- At the beginning of the 19th century William Smith, an attorney, had an estate in the western part of the county of Limerick, mainly in the baronies of Connello Lower and Shanid. Caleb Powell in his list of Jurors states that the Smiths were descended from Thomas Smyth, consecrated Bishop of Limerick in 1695. In 1774 William Smith purchased the lease of Cahermoyle from Boles Felan who held the property from the Southwell family. He was married to Grace Stevelly and died in 1809 leaving his two daughters as co heiresses. In 1799 Charlotte had married Sir Edward O'Brien baronet of Dromoland and it was their second son William Smith O'Brien, one of the leaders of the Young Ireland movement, who eventually inherited the Smith estate of Cahermoyle through his mother. Charlotte's sister Harriet married Thomas Arthur of Glenomera, county Clare. In 1864 William Smith O'Brien was succeeded by his son William Edward O'Brien who married Mary Spring Rice, sister of the 2nd Baron Monteagle of Brandon. Cahermoyle was sold by their son Dermod O'Brien in 1919.
- The Arthur family was long established in county Limerick and played a major role in the medieval civic life of Limerick city until Cromwell confiscated their property. An account book in the Special Collections section of the Glucksman Library at the University of Limerick gives details of rents received from Francis Arthur's ownership of property in Limerick city, mainly dating to the 1820s. His property included 149 acres at Coonagh in the North Liberties of the city, property at Arthur's Quay and many other city locations. Copies of 18th century deeds show his title to these properties. Details of Francis Arthur in account with such persons as Thomas William Roche, Lord Glentworth, Patrick Grene of Abbey, the executors of P.E. Arthur, Luke Callaghan of Paris and many others are also recorded. Arrears rentals for Arthur's Quay and other Limerick premises, 1821, statements of yearly outgoings, copies of deeds in connection with a conveyance between Francis Arthur, Ellen Arthur and Daniel Leahy are also included and some family history may be gleaned. Margaret, daughter of Francis Arthur and his wife Ellen Barrett, was married to Daniel Leahy [of Shanakiel, Cork]. Their son David Arthur Leahy held some land in the parish of Killeely, North Liberties, at the time of Griffith's Valuation. He was also a trustee of the Cork Athenaeum when it was advertised for sale in June 1863.