Sources

War records

Name: Alexander James Mann
Death Date: 10 Apr 1917
Rank: Temp 2 Lieutenant
Regiment: Black Watch (Royal Highlanders)
Battalion: 3rd Battalion
Type of Casualty: Died of wounds

De Ruvigny’s Roll of Honour 1914-24

Name: Alexander James (Hamish) Mann
Gender: Male
Rank: Lieutenant
Regiment or Ship: Black Watch (Royal Highlanders)
Birth Date: 5 Apr 1896
Birth Place: Borughty Ferry
Enlistment Date: 28 Jul 1915
Death Date: 10 Apr 1917
Death Place: Arras
Father: Alexander Mann
Volume: Volume 3

@Londonjackbooks: See http://www.tiikoni.com/tis/view/?id=1725214 forsnippet, expires in 28 days. Vol. 1 and Vol. 3 of the Roll of Honour are at archive.org. I haven't checked if the later volumes are elsewher. Mann's article would be well after v. 3. There are something like 26k biographies.

Probate

Calendar of the Grants

Name: Alexander James Mann
Probate Date: 27 Oct 1917
Registry: London, England
Death Date: 10 Apr 1917
Death Place: France

Census

1901 Scotland

Name: Alexander J Mann
Age: 4
Estimated birth year: abt 1897
Relationship: Son
Mother's name: Charlotte Mann
Gender: Male
Where born: broty ferry, Forfarshire
Registration Number: 310
Registration district: Monifieth
Civil Parish: Monifieth
County: Angus
Address: Hill St Sayview
ED: 8
Household schedule number: 39
LINE: 2
Roll: CSSCT1901_111
Household Members:
Name Age
Charlotte Mann 46
David Mann 17
Jeanie R B Mann 16
Isabel M Mann 13
Alan Mann 10
Alexander J Mann 4
Emma Ryott 27
Mary Pyott 25