Complex sentence: He was the son of colliery manager Enoch Jagger and his wife Mary Sargeant, and had a sister Edith (1881--1977) and brother Charles (1885--1934).
Split into simpler sentences: He was the son of colliery manager Enoch Jagger and his wife Mary Sargeant. He had two older siblings, a sister Edith (1881--1977) and brother Charles (1885--1934).