Siblings is a possibility. Also, I will keep in mind the Swords RC parish.
Patrick Joseph was born about 1868. His father, Patrick (Joseph?), is supposed to have died at sea around the same time.
....
There's a possible baptism match showing up on the free index of the RootsIreland pay-website. A Patrick May baptised in
Swords Skerries RC parish in 1868. Father's name is matching Pat or Patrick and mother's first name appears to be Anne. I cant get a search match for her surname (this search feature doesn't always work), but this should be included in the transcript.
There doesn't appear to be a corresponding civil record, so there may not be a birth cert available. The only major detail that this would add compared to a RC parish record would be father's occupation.
There are several Patrick May death registrations listed on the BMD Index, but assuming the death took place close to Skerries around the time of the birth of Patrick jnr, then this looks like the best match by probable age for Patrick snr... might be work trying a cert for this to confirm occupation, cause of death etc (Note death certs dont usually include family information - see following link).
Name: Patrick May
Registration district: Balrothery
Event type: Death
Registration year: 1868
Age : 49 (est. birth year 1819)
Volume: 2 / Page: 316
see :
Ordering Certs from GRO Roscommon Details included on a Death CertShane