I am not sure if my Higgins line is from the towns you mentioned... the only town I have noted for a Higgins on my line is for Riverstown, Co. Sligo. My GGgrandmother, Nora Higgins, was born there in 1853 then relocated to Shrule, Co. Galway once getting married. Her parents were James Higgins and Catherine Grey (we believe - not sure about that). Let me know if any of this is familiar... Thanks!