Complex sentence: Cox, the youngest of five children, was born in London, England and brought up in East Sussex, the son of Patricia C. A. "Trisha" (née Harley) and Andrew Frederick Seaforth Cox, who is a publisher.
Split into simpler sentences: Cox, the youngest of five children, was born in London, England and brought up in East Sussex. He is the son of Patricia C. A. "Trisha" (née Harley) and Andrew Frederick Seaforth Cox, who is a publisher.