Complex sentence: Walbank studied Classics at Peterhouse, Cambridge, and from 1951 to 1977 was Rathbone Professor of Ancient History and Classical Archaeology at the University of Liverpool; he is currently professor "emeritus" at Liverpool and an Honorary Fellow of Peterhouse.
Split into simpler sentences: Walbank studied Classics at Peterhouse, Cambridge, and from 1951 to 1977 was Rathbone Professor of Ancient History and Classical Archaeology at the University of Liverpool. He is currently professor "emeritus" at Liverpool and an Honorary Fellow of Peterhouse.