Complex sentence: St. Chad's Church of England, which is part of the Diocese of Chester, was consecrated in 1837 as a chapel to St Mary's Church, Cheadle, becoming the parish church for Handforth and part of Cheadle in 1877.
Split into simpler sentences: St. Chad's Church of England, which is part of the Diocese of Chester, is the Anglican Church based in Handforth. It was consecrated in 1837 as a chapel to St Mary's Church, Cheadle, becoming the parish church for Handforth and part of Cheadle in 1877.