en.wikipedia.org/wiki/Allan_Warren

This entry misspells Edgar Wallace's name as "Egdar".

The British Film Institute refers to the franchise as "Edgar Wallace Mysteries". IMDb's title page for the related screen series gives the title as "The Edgar Wallace Mystery Theatre". In both cases, the surname is spelled Edgar, not Egdar.

So the article's text contains a factual title/name error: it reverses the letters in the writer's first name.