Which fictional detective was created by Dorothy Sayers?

Dorothy Leigh Sayers (13 June 1893 – 17 December 1957) was a renowned English crime writer, poet, playwright, essayist, translator, and Christian humanist. She was also a student of classical and modern languages.

She is best known for her mysteries, a series of novels and short stories set between the First and Second World Wars that feature English aristocrat and amateur sleuth Lord Peter Wimsey, which remain popular to this day. However, Sayers herself considered her translation of Dante's Divine Comedy to be her best work. She is also known for her plays, literary criticism, and essays.

Sayers's first book of poetry was published in 1916 as "OP. I" by Blackwell Publishing in Oxford. Her second book of poems, "Catholic Tales and Christian Songs", was published in 1918, also by Blackwell. Later, Sayers worked for Blackwell's and then as a teacher in several locations, including Normandy, France.