| Regimental number | 4330 |
| Place of birth | Langhorne Creek, South Australia |
| Religion | Methodist |
| Occupation | Fisherman |
| Address | Finnis, South Australia |
| Marital status | Married |
| Age at embarkation | 20 |
| Height | 5' 7.5" |
| Weight | 156 lbs |
| Next of kin | Wife, Mrs Lilian McGuinness, Finnis, South Australia |
| Previous military service | Nil (exempt area under Compulsory Military Training scheme) |
| Enlistment date | |
| Place of enlistment | Adelaide, South Australia |
| Rank on enlistment | Private |
| Unit name | 32nd Battalion, 11th Reinforcement |
| AWM Embarkation Roll number | 23/49/2 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A19 Afric on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 32nd Battalion |
| Fate | Returned to Australia |
| Discharge date | |
| Family/military connections | Brothers: 4568 Pte Clarence Hurtle McGUINNESS, 32nd Bn, killed in action, 28 September 1917; 5619 Pte Horace Victor McGUINNESS, 27th Bn, killed in action, 1 March 1917. |
| Other details |
War service: Western Front Commenced return to Australia on board HT 'Corinthic', 10 January 1918 (for discharge: 'family reasons'); disembarked Melbourne, 3 March 1918, for onward travel by rail to Adelaide; discharged, 19 March 1918. War service: 1 year 169 days (of which 1 year 117 days was abroad) Medals: British War Medal, Victory Medal |
| Miscellaneous details | First given name incorrectly recorded on Embarkation Roll as Lawrence. |
| Date of death | |
| Age at death | 91 |
| Place of burial | Strathalbyn Cemetery, South Australia |