From where in Ireland?

that marriage date should have read 1886

Jean:

Below is the only civil birth index record that I can locate for a Martin Horan in 1865. The Castlereagh registration district covers northwest Co. Roscommon and eastern Co. Mayo. You can write to the General Register Office to get a copy of the birth record for about 4 euros. Instructions for ordering a copy are below. The record will show the names of his parents and where they lived.

Roger McDonnell

First Name: Martin  

• Last Name: Horan  
• Year: 1865  
• Registered Quarter/Year: 1865  
• Registration District: Castlereagh  
• Volume: 19  
• Page: 154  

Go to this link http://www.welfare.ie/en/Pages/Apply-for-Certificates.aspx In the middle of the page there are links for birth, marriage or death certificates. Hit the link for the form you want. You will likely get a screen asking for a User Name and Password. (This is a program bug that the GRO has to correct). Hit cancel and the appropriate form should come up. Print the form and complete the requested information. Also provide the information from the index record--quarter/year of the event. registration district and the volume and page number where the event is recorded. Make sure you ask for a copy which costs around 4 euros. ( A cert costs closer to 20 euros). You can also ask the GRO to e-mail the copy back to you.