Despite his family's lack of wealth, Stackelberg managed to marry Honorée (Honorine), his cousin and the daughter of the very wealthy baron Jan Carl Adelswärd.
[2] In the 1840s Stackelberg experienced a crisis of faith and soon found himself in revivalist Carl Olof Rosenius' Nyevangelism ('New Evangelism') movement.
He began to hold prayer meetings in ever-widening circles and invited spiritual speakers of various kinds to his home.
At this time, the Conventicle Act was still in effect, outlawing religious gatherings and lay preaching held outside the Church of Sweden.
He preached at the church and hired an assistant preacher: initially Peter Fjellstedt served in that role but left not long after and was replaced by K. P.
Nicolaus Bergensköld, who later emigrated to the United States and became a leading figure in the Swedish rural missionary movement (Mission Friends), preached in this church from 1865 to 1867.