Mor Dionysius Isa Gürbüz was born in 1964 in Kfarze, in Tur `Abdin, Turkey. His theological studies was at the seminary in the monastery of Mor Gabriel. He became a monk in 1985. Later he went to US for higher studies. In 1989, he was sent to Damascus to teach Syriac and liturgy at the Mor Ephrem Theological Seminary. Two years later he was ordained Priest by H.H. Patriarch Mor Ignatius Zakka Iwas. For the next three years he served the Syrian Orthodox church in Egypt. In 1993, the Patriarch appointed him as the rector of the Mor Ephrem seminary and he remained in this position until 1996. In September 1996, His Eminence was consecrated as the Metropolitan and secretary to the Patriarch. On May 18, 1997, His Eminence was given charge of the diocese of Germany where continued for nine years.
In January 2006, H.E. was appointed as the first Patriarchal-Vicar for the newly formed diocese of Switzerland and Austria. Metropolitan Mor Dionysius now resides at the monastery of Mor Augin, Arth. In addition to Syriac, Metropolitan is well versed in Turkish, Kurdish, Arabic and English.