Inchiquin came of military age in 1918, and as such briefly served in Britain in World War I as a Gunner in the Royal Field Artillery, however, the conflict ended before he had served on active service or had been promoted.[2]
After demobilisation he returned to the Anglo-American Corporation of South Africa and worked for the company until he entered the British Colonial Service in 1954.[1] He was employed on survey to the government of Northern Rhodesia[7](now Zambia), as senior geologist, becoming assistant director in 1957.[8] He retired from the Colonial Service in 1959, but continued to work as a consultant geologist until 1967, and succeeded to the Baron Inchiquin peerage in 1968.[1]
On 19 February 1945, he married Vera Maud Winter, the daughter of Reverend Clifton Winter of Winton House in Dawlish, Devon. They had no issue.
After succeeding to his brother's peerage, he returned to Ireland where he maintained Thomond House on the former ancestral estate of Dromoland Castle. The 16th Baron had sold most of the estate including the ancestral seat to billionaire industrialist Bernard McDonough in 1962 and had subsequently built the adjacent Thomond House. Today the Castle remains intact and serves as a luxury hotel. It is now owned by a series of Irish-American businessmen. Inchiquin also maintained a smaller home in England at Richard's Castle near Ludlow.[9]
Inchiquin died on 20 May 1982, in Richards Castle and was succeeded by his nephew Conor as the 18th Baron Inchiquin.[4]
^The Complete Peerage, Volume VIII. St Catherine's Press. 1932. p. 795.Appendix F – List of Peers and Sons of Peers who served in the Great [ie First World] War. He reached the induction age of 18 in the war's last year. Listed as having done Home Service, with no medal entitlement.