The marriage of Alice Edith CAMPBELL to Patrick Joseph O'SULLIVAN is on a number of databases. On https://beta.familysearch.org/ her father is shown as a James CAMPBELL. I assume that Mark has looked at the actual marriage record? Usually it gives the fathers' occupations, which would perhaps be a further clue to Alice's identity? Just from the name 'James CAMPBELL' I would have guessed Scottish.? I found several references to O'SULLIVAN's army record. He retired from the army in 1897. In 1896 (March qtr) he'd married Emma Agnes CALLINGHAM, his third wife. They had seven children - six girls and then Terence Patrick O'SULLIVAN, engineer, who's on Wikipedia. I'm quite certain that Patrick Joseph's O'SULLIVAN's army record will be at TNA, as Maureen suggests. Noel