Complex sentence: His secondary education was at St Aloysius' College, an establishment administered by the Jesuits at Garnethill in the city centre, where he won the Stewart Bursary in the 1912 University of Glasgow bursary competition and matriculated in the Faculty of Arts in October of that year.
Split into simpler sentences: His secondary education was at St Aloysius' College, an establishment administered by the Jesuits at Garnethill in the city centre. There he won the Stewart Bursary in the 1912 University of Glasgow bursary competition and matriculated in the Faculty of Arts in October of that year.