Complex sentence: The name Petersham is not derived for St. Peter as, in Saxon times, it was called Piterichesham which means a home or enclosure of Patricius or Patrick, but the name Petersham was in common use by the 16th century.
Split into simpler sentences: The name Petersham is not derived for St. Peter as, in Saxon times, it was called Piterichesham which means a home or enclosure of Patricius or Patrick. But the name Petersham was in common use by the 16th century.