My Adams side is from Magherafelt. Henry Adams abt. 1825-1870 was married to Mary McTeague abt. 1825-1900.
Richard:
Welcome to Ireland Reaching Out!
The couple were married in 1864 (see link below). They were married in the Desertmartin RC church. Below are links to the RC registers for Desertmartin and Magherafelt parishes. I would look for baptismal records on those registers.
Roger McDonnell
http://derry.rootsireland.ie/view_detail.php?recordid=901117&type=mch&r…
http://registers.nli.ie/parishes/0359 http://registers.nli.ie/parishes/0230