There are as we know a few Durkins (variations) in L'pool at the time. However, I will just post these - the one I just found is interesting.
Catholic Marriages (I have translated the Latin form to English form of names)
(All with parent Martin Durkin)
Catherine Durkin and Daniel McArdle 16th May 1899 St Nicholas
a witness is Margaret Durkin
Margaret Durkin and Timothy Hughes 11th Jun 1911 Sacred Heart
a witness is Helen Durkin
Helen (or Ellen) Durkin and Thomas Peter Walsh 25 Oct 1913 Sacred Heart
a witness is
Ann(a) O'Malley 78 Soho Street 
1901 the McArdles have Margaret Durkin and James Durkin as 'relatives' James is a butcher
I can't say that all these are relevant except for Ann O'Malley as a witness.
There are many Durkins
