He had been already discharged when he died
1876 Oct 4. Born Australia. His Intermediate Education board for Ireland "Evidence of Age" Form of Statutory Declaration dated 14 March 1892 which states that Ellen P Keogh-Cullen (with and address in Rome) Aunt & Guardian that Edward was born 4th Oct. 1876 in Australia. Ellen appears to be his only immediate family relative.
1899 Nov 14. The undermentioned Gentlemen to be Second Lieutenants : Edward Keogh-Cullen in the 5th (Roscommon) Militia Battalion of The Connaught Rangers
1900 Apr 25. 5th Battalion, the Connaught Bangers, The undermentioned Second Lieutenants to be Lieutenants:— E. Keogh-Cullen.
1900 May 1. The Kings (Liverpool Regiment)) Lieutenant Edward Keogh-Cullen, from 5th Battalion the Connaught Rangers, on augmentation.
1900 Jun 6. Left Southampton on SS Aurania for South Africa.
1900 Sep 14. Staff appointment in South Africa. To be Railway Staff flficers, graded as Staff. Captains Second Lieutenant E. Keogh-Cullen, the King's (Liverpool Regiment).
1900 Dec 29. The King's (Liverpool Regiment), Second Lieutenant E. Keogh-Cullen to be Lieutenant, to complete establishment.
1904 Jun 11. Kings Liverpool Regt. Supernumerary Lieutenant Edward Keogh- Cullen, to be Lieutenant, vice C. H. Dinnen.
1906 Jun 14. The King's (Liverpool Regiment), Lieutenant Edward Keogh-Cullen is seconded for service as an Adjutant of Indian Volunteers.
1909 May 22 5th Battalion, The Royal Munster Fusiliers, Lieutenant Edward Keogh-Cullen, retired pay, late The King's (Liverpool Regiment), to be Lieutenant, uuder the provisions of Article 510, Royal Warrant for Pay and Promotion, 1907, with seniority as from 6th December. 1899.
1911 census 1 Hollymount Demesne, Hollymount, Mayo. He is a retired Lt. born Australia
1913 Jun 2. 5th Battalion, The Royal Munster Fusiliers, Lieutenant Edward Keogh-Cullen to be Captain.
The family believe that he was on active service as a Captain in The Royal Munster Fusiliers in Gallipoli.
1919 Discharged from RAF
1920 May 15. Died of TB at Our Ladys Hospice, Harolds Cross on 15th May 1920 (death Cert).
Buried in Glasnevin, Grave Location: South New Chapel PD 39. Owner Ellen Cullen (aunt)
British soldiers died in Ireland