Brisbane Charles Somerville Warren (1887, Fermoy - 1979) was an Irish entomologist who specialised in Palaearctic Lepidoptera.
Duggan is supposed to have been a direct descendant of Mogh Ruith and a Duggan, King of Fermoy, was one of Brian Boru's lieutenants to be killed at the battle of Clontarf.
Ó Súilleabháin was then working for the Nagle family, a wealthy Anglo-Irish, but Catholic and Irish-speaking, family in Fermoy, County Cork.
The town's industries also include electronics manufacturing and assembly by Sanmina-SCI Corporation, formerly Space Craft Incorporated.
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Brother Colm O'Connell, Irish missionary and coach of world famous track athletes, is from Caherduggan.
The territory Mug Ruith received for his descendants was Fir Maige Féne, later known as Fermoy.
Patrick Michael Rice (also Patricio Rice) (September 1945, Fermoy – 8 July 2010, Miami) was an Irish human rights activist and former Catholic priest and religious who became a resident of Argentina.
During the first quarter of the 19th-century, Abercromby purchased most of the town and lands of Fermoy in Ireland from fellow Scotsman John Anderson.
She was the younger daughter of the fourth Baron Fermoy, a friend of King George VI and the elder of the twin sons of the American heiress Frances Work and her first husband, Hon.
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Diana, Princess of Wales, was a great-great-granddaughter of the first Baron Fermoy through her mother, Frances Shand Kydd.
Numerous accounts and maps dating from the 1680s tell of armies and travellers journeying from Fermoy to Clogheen and onwards to Dublin via Kilworth and Kilworth Mountain.
On 9 September 1887, three men – John Shinnick of Fermoy, John Casey of Kilbehenny and Michael Lonergan of Galbally, Co.
Lady Fermoy was born at her father's house, Dalhebity, Bieldside, Aberdeenshire, the daughter of Colonel William Smith Gill and his wife Ruth (née Littlejohn).