The Frank Owens Family

I am in the process of creating a Family Tree of The Owens Family. My great-great-grandfather was born in Co. Meath, Ireland and married a Margaret Gilsenan in 1827 in Co.Meath.I have been able to record marriages etc. from that point on and have considerable data on the family. My maternal side of the family is Eastman, who came to Ireland in mid 1850s from Bedminster in the County of Bristol/Somerset, England. My challeng is to trace the Eastman family back to the Bristol area and to go as far back as possible on the Owens side.