As was the custom among young aristocrats at the time, he then set out to complete his education by travel. As the
French Revolution had made European tours unsafe, his parents resolved that he should spend two years traveling through America, the West Indies, and other foreign lands. His mother provided him with letters of introduction from the prince-bishops of Hildesheim and Paderborn to Bishop
John Carroll of Baltimore. With his tutor, Father Brosius, afterward a prominent missionary in the United States, he embarked from Rotterdam on August 18, 1792, and landed in Baltimore, October 28. To avoid the inconvenience and expense of traveling as a Russian prince, he assumed the name of Augustine Schmettau. This name then became Schmet or Smith, and he was known as Augustine Smith for many years after. To the shock and horror of his father, Prince Dimitri decided to join the priesthood and offered to forgo his inheritance. The Ambassador subsequently persuaded
Catherine the Great to award his son a commission in one of the Palace Guards Regiments and formally summoned him to active duty in St. Petersburg. Demetrius Augustine Gallitzin entered the newly established
Seminary of St. Sulpice in Baltimore on November 5, 1792. Father Gallitzin was ordained on March 18, 1795, by Archbishop Carroll. Gallitzin was the first to make all his theological studies in the United States. Gallitzin then was sent to work in a church mission at
Port Tobacco, Maryland, whence he was soon transferred to the
Conewago district where he served at
Conewago Chapel until 1799. His missionary territory extended from
Taneytown, Maryland to
Martinsburg, then in Virginia, and
Chambersburg, Pennsylvania. In 1794, Gallitzin traveled to
Middleway, West Virginia, near Martinsburg to accompany Father
Dennis Cahill in the investigation of a haunted-house phenomenon known locally as the
Wizard Clip. Gallitzin wrote of this experience much later, around 1839. ==Missionary==