1887 May 31. Born Glasslough, Co Monaghan. His father was a Sergeant in the RIC
1901 census at 2 Meeting house Lane , Aughancloy Town , Tyrone. The form is signed by Thomas H Oswald, head of family, but not at home on night of census
1911 census, his father has retired by William is not with the rest of the family
1919 Feb 3. Commissioned 2nd Lt in R.Innis. Fus. William Henry Oswald. This was commission on discharge. The undermentioned Cadets to be temporary 2nd Lts under the provisions of the Royal Warrant dated 30 Dec 1918 , promulgated in Army Order 4 2 of 1 Jan . 1919:
1920 Dec 29. Allocated service no 1404 but never actually joined. He is only on Alphabetic register, so no number on Numeric Register
1927 Dec 10. Leaves UK for New York with wife Charlotte. He is a clerk, last living in Northern Ireland, and intending to live in USA
1942. WW2 Draft Card USA
1949 Dec 10. Arrives in UK from USA. Heading to Belfast with wife Charlotte. He is an "Inspector"
1950 Jan 13. Leaves UK for New York with his wife Charlotte
1952 Aug 22. Arrives in UK from USA. Heading to Belfast with wife Charlotte. He is an "Inspector"
1954 Feb 27 Died in Belfast, NI