I have recently finished a longer article about the poet and clergyman Samuel Älf (1727-1799). In the course of that work I have read a lot of letters to him and from him as well as some from people he met. One of these was Olof Andersson Knös (1756-1804), who in 1779 visited Älf in Linköping. During his visit he spoke with Johan Sparschuch (1699-1781), who (just as Älf) had been a friend of the late bishop Andreas Rhyzelius (1677-1761). Rhyzelius was in the 1710's close to Charles XII and served as his chaplain. Rhyzelius had told Sparschuch the follwing story:
One day towards the end of the King's life Rhyzelius was told that the King wanted to receive communion. Rhyzelius was surprised and said that he could not give communion before having had a chance to speak with the King. Charles had immediately agreed and he had himself put a small stool in the middle of the floor, kneeled and during his confession almost melted in tears.
Rhyzelius autobiography is filled with moving stories of his time in the service of Charles, who he decades later remembered very fondly. I don't have it available right know, but among the things Rhyzelius writes is that the country would have been much better if Charles had lived. That's a pretty astonishing thing to say by a man who reached great heights during the "Age of Liberty", i.e. the period which followed the King's death.
Source: Olof Andersson Knös to Carl Christoffer Gjörwell 22 August 1779, Ep. G. 7:6, Royal Library