Complex sentence: Gwyn Gertrude Hughes married Sir Arundell Neave in 1871, and he donated some Flemish stained glass from the 15th and 16th centuries, which he had inherited from his father, to the church in 1876.
Split into simpler sentences: Gwyn Gertrude Hughes married Sir Arundell Neave in 1871. He donated some 15th and 16th-century Flemish stained glass inherited from his father to the church in 1876.