| Regimental number | 13611 |
| Date of birth | |
| Place of birth | Dunedin |
| Religion | Methodist |
| Occupation | Gardener |
| Marital status | Single |
| Age at embarkation | 21 |
| Height | 5' 7.5" |
| Weight | 140 lbs |
| Next of kin | Father, J H Seidelin, Milton Street, Mornington, Dunedin |
| Previous military service | Served in A Company, 4th Regiment, Territorial Force; still serving at time of NZEF enlistment. |
| Enlistment date | |
| Place of enlistment | Trentham |
| Rank on embarkation | Private |
| Unit name | New Zealand Expeditionary Force, 13th Reinforcements, Divisional Signalling Company |
| Embarkation details | Unit embarked from Wellington on |
| Final rank | Private |
| Fate | Killed in Action |
| Age at death from cemetery records | 23 |
| Place of burial | Passchendaele New British Cemetery (Plot XV, Row B, Grave No 1), nr Ieper, Belgium |
| Miscellaneous information from cemetery records | Parents: J.H. and Jessie Elizabeth Seidelin, Byron Street, Mornington |
| Other details |
War service: Western Front Embarked Wellington, 31 May 1916; disembarked Devonport, England, 26 July 1916. Proceeded overseas to France, 9 December 1916. Admitted to 24th General Hospital, Etaples, 21 December 1916 (influenza); discharged to Base Depot, Etaples, 31 December 1916. Joined 2nd Bn, Otago Infantry Regiment, in the field, 5 January 1917, and posted to 10th Company. Reported missing, 12 October 1917. Court of Enquiry, 21 May 1918, concluded: 'Killed in action, 12 October 1917.' Medals: British War Medal, Victory Medal |
| Sources | Nominal Roll Vol. 2: Roll 33, p. 23 Archives New Zealand (Wellington), Agency AABK, Series 18805, File 7815651 |