Raban von Helmstatt
Raban von Helmstatt was a German nobleman who served as Bishop of Speyer from 1396 and as Archbishop and Elector of Trier from 1430 until his resignation from both positions in 1438. He was appointed Archbishop of Trier by Pope Martin V in May 1430. Raban died in Speyer on 4 November 1439 and was buried in Speyer Cathedral.