thank you, Fred
(and thanks Aghadowey and Shellyesq too)
Posting this thread must have concentrated my mind a bit. I had already found stuff about their later life on the fultonhistory site some months ago. It's an absolutely fantastic site, Fred, I agree.
Anyway, with a bit of dedicated searching in the last hour, I've come up with their marriage, (via a "20 years later" entry in the "Cato Citizen") on May 10, 1916 in St Patrick's Church (Cato, I suppose)
It even said that the bride wore old rose poplin.
To think - if I'd been more organised, I'd have found this earlier - but everyone was so sure they married in Ireland!
eadaoin