Complex sentence: Gertrude Walker was the daughter of the Thomas Walker, rector of St. Peter's Church in the Worcestershire village of Abbots Morton-she played the organ there and trained the choir, and had already known Elgar for many years.
Split into simpler sentences: Gertrude Walker was the daughter of the Thomas Walker, rector of St. Peter's Church in the Worcestershire village of Abbots Morton. She played the organ there and trained the choir, and had already known Elgar for many years.