Murder is Easy (1982 film)
In the 1982 film adaptation, the character is renamed Lord Gordon Easterfield and is portrayed by Timothy West. The portrayal is highly faithful to the original novel despite the change of name.
Agatha Christie's Marple
In the 2008 ITV adaptation, Lord Whitfield is mentioned only. Here he used to live at his family home which was not Ashe Manor but Hexley Hall, some distance from Wychwood under Ashe. By the time of the events in the episode, Hexley Hall had become "Hexley Hall Hospital", a mental institution. During Lord Whitfield's time, an American couple, the Learys, had been summer guests at Hexley Hall.
BBC Radio 4
Les Petits Meurtres d'Agatha Christie
In Un meurtre est-il facile?, the France Télévisions and Escazal Films adaptation of the novel, the parallel character is named Èmile Deboucke. Here he owns a textile factory in the surroundings of Lille.