The Evans/Vanderbilt /Gilligan Connections

Hello ! We are looking for any family connections to the Evans/Vanderbilt/Gilligan clan. My maternal grandmother,Louisa Jane Evans migrated from "Rhos",Wales via ship in 1908 at 20 years old. Maternal grandfather, John Vanderbilt, was from Lima Ohio and we are looking for relatives there. My paternal grandfather, William Joseph Evans was in an ophanage and past ties unknown to us today. My paternal grandmother, Katherine Gilligan, has relatives in Pa. but further back than this we can not locate yet. Would love to hear from anyone with information !! Jan