Complex sentence: Denny married Barbara Nelson-Jones, lyricist and actress, in 1961 and their son, St.John, was born on 1 March 1963 while Denny was on stage with Lonnie Donegan in Leeds.
Split into simpler sentences: Denny married Barbara Nelson-Jones, lyricist and actress, in 1961. Their son, St.John, was born on 1 March 1963 while Denny was on stage in Leeds.