Kolping was ordained to the priesthood on 13 April 1845 in Cologne's Minoritenkirche but his father died the night before so his ordination was full of mixed emotions. He first served in Elberfeld – now part of Wuppertal – as a chaplain and religious education teacher from 1845 until 1849. In 1847 he became the second president of the Gesellenverein which gave its members both religious and social support. In 1849 he returned to Cologne as the cathedral's vicar and established Cologne's branch of the Gesellenverein. He united the existing associations as the "Rheinischer Gesellenbund" in 1850 – this fusion was the origin of the present international "Kolpingwerk". In 1854 he founded the newspaper "Rheinische Volksblätter" (or the "Rhine Region People’s Paper") which quickly became one of the most successful press organs of his time. He was the editor of the Catholic People's Calendar from 1852 to 1853 and of the Calendar for the Catholic People from 1854 to 1855. In 1862 he became the rector of the Saint Maria Empfängnis church in Cologne. Pope Pius IX titled him as a Monsignor in 1862 – this came about after the pair met in Rome in a private audience in May to discuss the priest's work. died on 4 December 1865 due to lung cancer; he had suffered from a severe joint inflammation in his right forearm that spring. His remains are buried in the Saint Maria Empfängnis church. He is remembered as the "Father of All Apprentices" and in 2003 was ranked eleventh in the Unsere Besten. Pope John Paul II visited his tomb in November 1980 while visiting the nation.