Complex sentence: Willows was born in Cardiff, Wales on 11 July 1886, by 1896 he was at Clifton Preparatory School in Bristol which he left aged 15 in 1901 to train as a dentist.
Split into simpler sentences: Willows was born in Cardiff, Wales on 11 July 1886. By 1896 he was at Clifton Preparatory School in Bristol which he left aged 15 in 1901 to train as a dentist.