This is not really Maura T. connected as I have very limited details on her ancestry but if Robert get in touch with me I will see if I can help him trace his ancestry. Most Clare Tierneys came from the northern half of Clare especially around Corrofin and the Burren and Kilfenora areas. The Tierney Clans Society has a database that it will share freely to all of Tierney descent trying to trace Tierney ancestors. We do not have all the answers but we will try as best we can to assist - regardless of marital status, class or creed.
Best regards, Cathaoir.