Gregor Helfenstein

Gregor Helfenstein (1559–1632) was a Roman Catholic prelate who served as Auxiliary Bishop of Trier (1599–1632).

Gregor Helfenstein was born in the village of Oberemmel, near Konz, Germany in 1559. On 29 Oct 1599, he was appointed during the papacy of Pope Clement VIII as Auxiliary Bishop of Trier and Titular Bishop of Azotus. He was consecrated bishop in 1600. He served as Auxiliary Bishop of Trier until his death on 21 Oct 1632.

While bishop, he was the principal co-consecrator of:

• Lothar von Metternich, Archbishop of Trier (1600);
• Johann Schweikard von Kronberg, Archbishop of Mainz (1604);
• Philipp Christoph von Sötern, Coadjutor Bishop of Speyer (1612); and
• Wilhelm von Essern (Effern), Bishop of Worms (1612).