Complex sentence: He began to paint while at the Liverpool Collegiate School; but as the idea of adopting the artist's profession was not favoured by his father, he went in 1848 to Corpus Christi College, Oxford to study classics.
Split into simpler sentences: He began to paint while at the Liverpool Collegiate School. However at his father's suggestion he went in 1848 to Corpus Christi College, Oxford to study classics.