1891 Jul/Sep. Born Cork, Ireland
1901 Irish Census North West Ward, Cork, Ireland Aged 9 Son
1911 Irish Census Watercourse Road Cork
1914 Aug 31. Enlisted as 6/196 Private Michael Heffernan, 6th (Service) Battalion, The Royal Munster Fusiliers (from regimental number) aged 23
Appointed Lance Corporal
1914 Aug .Battalion formed at Tralee as part of K1 and came under orders of 30th Brigade in 10th (Irish) Division. Battalion moved to the Curragh.
1915 May battalion moved to Basingstoke.
1915 Jul 9 . Battalion embarked at Liverpool and sailed to Gallipoli via Mudros.
1915 Aug 7. battalion landed Suvla Bay.
1915 Oct 2. battalion moved via Mudros to Salonika.
1916 Nov . battalion 6 absorbed the 7th (Service) Battalion, The Royal Munster Fusiliers
1917 Sep, battalion moved to Egypt for service in Palestine.
1918 Apr 30. battalion left the Division and sailed from Port Said, arriving Marseilles 1 June
1918 Jun. Transferred as 20845 Corporal Michael Heffernan to 1st Battalion, The Royal Irish Regiment in Salonika (from regimental number)
1919 Jul 10 10 July 1919 Discharged on re enlistment as 20845 Corporal Michael Heffernan 1st Battalion, Royal Irish Regiment Transferred as 35472 Corporal Michael Heffernan to The Royal Munster Fusiliers
Promoted Sergeant
1920 Aug. Army Order 338 he was renumbered as 7212416 Sergeant Michael Francis Heffernan, Depot, The Royal Munster Fusiliers at Tralee
1921 Jan 21. missing at Tralee. Collins List gives Sgt Heffernan of RMF missing from RMF depot in Tralee
1923 Nov 24. Medals returned
1926 Marriage to Mary E Brown Aged 35 at Birkenhead, Cheshire
1930 Feb . Discharged services no longer required at Warwick KR (xviii) At his own request after 18 years' service (with a view to pension under the Pay Warrant)
1930 Feb. medals re-issued. Desertion issue must have been resolved legally after he signed forms of confession for desertion for medals to be re-issued
1968 Mar 22. Death Aged 76 at Birkenhead, Cheshire