According to the Roll of Honour circular filled out by his widow for the Memorial War Museum, William Mann was educated at a "Public School" in England and emigrated to Australia "23 years ago", thus presumably in around 1894. She gave his age at the time of death as being 41, rather than the 43 years and 3 months inferred from his enlistment records.
- Roll of Honour circular For the First World War the circulars were forms sent to next of kin seeking details regarding the deceased. They form the basis of the card indexes from which the Australian War Memorial's original Roll of Honour was compiled.
Contemporary press clippings:
- The Advertiser, Monday 11 June 1917, The Express and Telegraph, Monday 11 June 1917, Chronicle Saturday 16 June 1917
MANN.— Killed in action in France, May 7, Private William Mann, beloved husband of Annie Mann, of Bishop-avenue, Alberton, aged 41 years. Sadly missed.
MANN.—In loving memory of my dear husband, Private William Mann, killed at Bullecourt, May 7, 1917.
Too far away your grave to see,
But not too far to think of thee.
—Inserted by his loving wife and family.