Dear mw5312:
Thank you for your post to the message board and welcome to Ireland Reaching Out.
I have checked for the surname Corcoran as to its possible locations in County Clare. I used the Griffith's Valuation surname index on the Clare Library website and I see that there are 2 main locations:
Broadford (Killokennedy) and Ennistymon.
Unfortunately, the Ennistymon parish registers only begin in 1870, so I'm unable to see a baptism record for Margaret.
I checked Broadford for a Margaret Corcoran baptised in February 1859, but have not found anything. These registers begin in 1844, and you may want to check them yourself. The link is below:
https://registers.nli.ie/parishes/0767
I also checked the Killaloe parish registers which begin in 1828 and as O'Briensbridge was mentioned as a location for a Corcoran, this is worth checking. Unfortunately, I do not see any Corcoran surnames listed in several years previous and post 1859. For your reference, the parish register link for Killaloe is below:
https://registers.nli.ie/parishes/0793
In the meantime, if you have further information that you would like to share, please reply to this thread. You may also be interested in creating an Ancestor Profile for Margaret and please feel free to do so under the XO Chronicles feature which is located at the top of this page. These profiles are widely read and others may be researching the same family.
Kind regards,
Jane