Lord Derby attends St Paul ' s rehearsal of his grand daughters wedding . The bride and bridegroom , Miss Ruth Primrose and the Hon Charles Wood attended a rehearsal of their wedding which takes place tomorrow ( Saturday ) at St Paul ' s Cathedral . Lord Deby , grandfather of the bride , with Lord and Lady Halifax , parents of the bridegroom , also attended the rehearsal . Photo shows , Lord Derby entering St Paul ' s with the bridesmaids and pages . 24 April 1936