Hi Myra,
Thank you very much for your message.
Have you tried looking in church records for information? Most Catholic records are held locally so you may need to write to the local parish priest for possible assistance. One website that you may find useful is the Irish Times where they give an overview of what records are available in specific parishes. It also shows you where copies of the records are available. For Omey/Clifden parish, follow this link:
http://www.irishtimes.com/ancestor/fuses/rcparishmaps/index.cfm?fuseaction=showidrecords&churchid=1046&CityCounty=Galway&CityCounty=West%20Galway&parish=Omey
As you can see from this link the Galway Family History Society West have copies available. If you would like to contact them for assistance here is their email, however please note that you will have to pay for their services:
galwaywestroots@eircom.net
Have you already tried looking for him on www.familysearch.org ?
Also, you could try searching on the Roots website at www.rootsireland.ie You need to register with this website to conduct a search. When you register you get free credits which allow you to search for free, however to view an actual record it costs 5 euros per record. I already did a search and 2 results came back for John King born Co. Galway 1858. These may or may not be relevant to your family history. It might be an idea to see what you can find off Familysearch first before you start spending money.
Civil registration began in Ireland in 1864 so you should be able to find John and Hannah?s marriage record in these records. These can be helpful as sometimes the couple?s fathers? names are listed or a sibling may be listed as a witness etc. Civil records are available from the General Register?s Office in Dublin. Here is their website:
http://www.groireland.ie/research.htm
You can search the indexes to these records online at:
https://familysearch.org/search/collection/1408347
Some other websites that you may find useful are:
The National Archives of Ireland http://www.nationalarchives.ie/genealogy1/genealogy-records/introduction/
The National Library of Ireland http://www.nli.ie/en/family-history-introduction.aspx
The National Archives Scotland- family history: http://www.nas.gov.uk/familyHistory/
Census records: http://www.census.nationalarchives.ie/search/
Genealogy links: http://www.genealogylinks.net/uk/ireland/galway/index.html
I hope that some of this is helpful. Best of luck with your research!
Kind regards,
Genealogy Support