Holy Trinity,Rossmore,Portlaw

These are the parishes I found my Terry family listed. Is there away I can find a town of origin? I know Holy Trinity( 1770) isin the city of Waterford, Rossmore (1797) is near Killmacthomas, and Portlaw (1824)is Portlaw. Did families move around that much? Are their certain cemeteries ( pertaining to those years) I can explore in those areas? Are there still Terry families living in those areas? I would appreciate any help provided. Thanks