possible marriage for James and Ellen from the BMD Index ?
Name: Ellen Walker
Registration district: Tobercurry
Event type: Marriage
Quarter and year: Apr - Jun 1919
Volume: 4 / Page: 233
James O'Dowd
[same index references as Ellen]
Tobercurry registration district covers parts of south west county Sligo, and includes Cloonacool townland.
You can order a research cert using these details to see if this fits your clues.. a marriage cert will include residence of the bride and groom and also details (name & occupation) of their fathers which should help locate James and Ellen on the 1911 census
see :
Ordering Certs from GRO Roscommon Details included on a Marriage CertShane