
Gwendoline Williams was born on 19 August 1922 in Blackheath, South London, England, UK, daughter of Alice (Lee) and Alfred Edward Williams, her younger twin brothers are also authors. Educated at Lady Margaret Hall, Oxford, where she read History, and later lectured there. On 16th October 1949, she married Dr Lionel Harry Butler (1923-1981), a professor of medieval history at University of St. Andrews and historian, Fellow of All Souls and Principal of Royal Holloway College. The marriage had a daughter, Lucilla Butler. In 1956, she started to published John Coffin novels under her married name, Gwendoline Butler. In 1962, she decided used her grandmother's name, Jennie Melville as pseudonym to sing her Charmian Daniels novels. She was credited for inventing the "woman's police procedural". In addition to her mystery series, she also wrote romantic novels. In 1981, her novel The Red Staircase won the Romantic Novel of the Year Award by the Romantic Novelists' Association.

A Double Coffin

A COLD COFFIN

Death Lives Next Door
1960
ISBN 9781560546306
A Coffin from the Past
1970
ISBN 9780713802818
A coffin for the canary
1974
ISBN 9780333166802
Coffin on the Water
1986
ISBN 9780373260904
Coffin On Murder Street
1991
ISBN 9780373261475
Cracking Open a Coffin
1995
ISBN 9780373261710
A Dark Coffin
1996
ISBN 9780373262656
Coffin in Oxford
1962
ISBN 9781902002002
A nameless coffin
1966
ISBN 9780754039938
Coffin following
1968
ISBN 9780713802085
Coffin In The Black Museum
1989
ISBN 9780006179108
Coffin's Game
1998
ISBN 9781860424403