re the Boyle/ Lavery connection.
My mother's family lived in Derrydrumult, County Down and one of the neighboring farms was registered under the names George E. and Thomas H. Lavery in the 1901 census. I visited the famiuly farm many times and the name Lavery was a common one in the area. You should contact St. Colman's Church in Kilwarlin for more information.
I hope this helps.