Military Papers Henry Argent attested 15 Feb 1877 Age 18 born 1859 St Pancras to 2/24 No.1229 on 20 Feb 1877, to S Africa 1 Feb 1878 to 12 Jan 1880, to Med, India, then UK. Discharged 18 Feb 1889 at Brecon 12 yrs. Married Matilda Louisa Martin on 16 June 1884 in Bethnal Green. On his Death Cert [Not true official type] Died 16 Aug 1939 Mlie End Hospital. Henry Argent alias Henry Mclean S.W.B.
The 1911 census 123 Duckett St Mile End, Married to Daisy, 6 Children including Albert and Eleanor. William Henry Mclean is buried in Tower Hamlets Cemetery[ex Bow Cem] he appears on the Findagrave website with his daughter Eleanor have a look at her own entry.