you can order a research cert from the GRO (for the birth or marriage) - download the form(s) at :
http://www.groireland.ie/apply_for_a_cert.htm The form allows for different types of cert - just ensure that the index details (listed earlier) are entered somewhere on the form. Ignore the other details - RSI number, parents names etc
you can search the Irish civil index on familysearch at :
http://pilot.familysearch.org/recordsearch/start.html#p=2;t=searchable;c=1408347Details included on an Irish marriage cert are :
District, church & priest details
Date & place of marriage
groom's full name, occupation , condition, current residence and age
bride's full name, occupation , condition, current residence and age
groom's father's name and occupation
brides's father's name and occupation
witness names
* age usually entered as 'full'
* condition = bachelor, spinster etc
not sure though how that 1914 marriage would fit with the data you have on where James was located... although it's a match to James' full name..
Shane