Complex sentence: The church's earliest known rector was Hugh de Fulbourne in 1329 and around 1338 it became the parish church of Whitechapel, called, for unknown reasons, St Mary Matfelon.
Split into simpler sentences: The church's earliest known rector was Hugh de Fulbourne in 1329. Around 1338, it became the parish church of Whitechapel, called, for unknown reasons, St Mary Matfelon.