| Regimental number | 14257 |
| Place of birth | Armidale, New South Wales |
| Religion | Roman Catholic |
| Occupation | Carrier |
| Address | Armidale, New South Wales |
| Marital status | Single |
| Age at embarkation | 35 |
| Height | 5' 7.75" |
| Weight | 158 lbs |
| Next of kin | Mother, Mrs Amelia Ryan, Beardy Street, Armidale, New South Wales |
| Previous military service | Served in 6th Australian Horse for 3 years. Resigned owing to business reasons. |
| Enlistment date | |
| Place of enlistment | Sydney, New South Wales |
| Rank on enlistment | Sergeant |
| Unit name | Australian Wireless Squadron 1 - Special Reinforcements |
| AWM Embarkation Roll number | 22/16/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board SS Port Darwin on |
| Rank from Nominal Roll | Sergeant |
| Unit from Nominal Roll | 1st ANZ NZS Sqd |
| Fate | Returned to Australia |
| Family/military connections | Brother: 1415 Pte Thomas Oswald RYAN, 2nd Signal Squadron Australian Mounted Division, returned to Australia, 29 April 1919. |
| Other details | Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, RYAN Sylvester John * |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
