Complex sentence: In 1952, Peter married Gillian Joan Hoare, daughter of W.D.N. Hoare (a descendant of the banking profession's Henry Hoare II), and had a son, Edward Stanley Muttlebury, who was born in 1953, and died in April 2008.
Split into simpler sentences: In 1952, Peter married Gillian Joan Hoare, daughter of W.D.N. Hoare (a descendant of the banking profession's Henry Hoare II). Peter and Gillian had a son, Edward Stanley Muttlebury, who was born in 1953, and died in April 2008.