Richard Geoghegan

Richard Geoghegan (1717–1800) was an Irish landowner. An octagonal tower (folly) was also built by Geoghegan in the late 18th century, at the top of Doon Hill, John O'Donovan's 19th-century Ordnance Survey letters for Galway suggest that Richard Geoghegan studied a Dutch method of land reclamation, which resulted in recovering a tract of land from the sea at Ballyconneely. This work was commemorated by an inscription in Latin on a weir, dated 1758.

Richard Geoghegan died in 1800. His son, John David Geoghan, took the additional name of O'Neill. His grandson, John Augustus O'Neill, "went heavily into debt through his large unfinished additions to the 'castle'", and the family left the area during the 19th century.

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