Complex sentence: Leigh married Denise Branch, daughter of Colonel Cyril Denzil Branch MC, on 20 May 1944; they had two sons, the younger being the Conservative MP Sir Edward Leigh.
Split into simpler sentences: Leigh married Denise Branch, daughter of Colonel Cyril Denzil Branch, on 20 May 1944. Together they had two sons, one of whom is the Conservative MP Sir Edward Leigh.