Complex sentence: From 1836 to 1855 he was a schoolmaster at his old school, rising to head of mathematics, and for part of that time was also curate of St Benetfink's and of St Michael's, Wood Street.
Split into simpler sentences: From 1836 to 1855 he was a schoolmaster at his old school, rising to head of mathematics. For part of that time he was also curate of St Benetfink's and of St Michael's, Wood Street.