| Regimental number | 181 |
| Place of birth | Kent England |
| Religion | Church of England |
| Occupation | Clerk |
| Address | 2 McLeay Street, Pott's Point, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 33 |
| Next of kin | Mrs A S Roberts, c/o Walter Stewart, 5 Figtree Court, Innes Temple, London, England |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 4th Battalion, F Company |
| AWM Embarkation Roll number | 23/21/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board Transport A14 Euripides on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 4th Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | *Spelt Ian Hayward Roberts on NR |
| Age at death from cemetery records | 35 |
| Place of burial | Gordon Dump Cemetery (Special Memorial Row B, No. 18), Ovillers-La Boiselle, France |
| Panel number, Roll of Honour, Australian War Memorial | 179 |
| Miscellaneous information from cemetery records | Parents: Rev. William and Mrs Ann ROBERTS, Upmoor Cottage, Canford Cliffs, Dorset, England. Native of London, England |