Complex sentence: McCahon responded to this and to the influence of Field when he enrolled at the school, where he met and socialised with Rodney Eric Kennedy (1909--1989), Doris Lusk, Anne Hamblett and Patrick Hayman.
Split into simpler sentences: McCahon responded to this and to the influence of Field when he enrolled at the school. There he encountered and socialised with Rodney Eric Kennedy (1909--1989), Doris Lusk, Anne Hamblett and Patrick Hayman.