Victor Valentin Dreyer was born in Rosheim, France, on 15 February 1866. He attended the seminary in Saint-Dié-des-Vosges and then joined the Order of Friars Minor, taking the name Marie Colomban. He was ordained a priest on 25 July 1889.
He held several posts within his order, including assignments in Canada, Rome, and the Holy Land.
On 27 June 1923, Pope Pius XI named him a titular bishop and the first Apostolic Vicar of the Rabat, Morocco.[1] He received his episcopal consecration from Cardinal Louis-Ernest Dubois, Archbishop of Paris, on 16 August 1923.[citation needed]
On 11 March 1927, Pope Pius named him the first Apostolic Vicar of Suez Canal.[2]
On 24 November 1928, Pope Pius named him Apostolic Delegate to Indochina[3] and on 26 November a titular archbishop.[4] He retired in 1936 upon the appointment of his successor in that position.
Dreyer died on 7 May 1944[5] in Vigny, Val-d'Oise.