There's a lament after Keyserlingk's death, Aux Manes de Césarion, which includes a "our two hearts became one heart" line. (I remember that he also wrote in a letter that they had one soul - I'll have to find that again. I know he also used that expression for Wilhelmine, but I haven't come across any other instance of it besides those two.)
Awww, that *is* interesting! I'll keep an eye out for other examples as well. I'm also reminded of this:
Think how unfortunate I am to have lost, almost at the same time, my poor Jordan and my dear Keyserlingk. They were my family, and I think I am now a widower, an orphan
Re: Keyserlingk, sensational gossip, and Royal Reader request
Awww, that *is* interesting! I'll keep an eye out for other examples as well. I'm also reminded of this:
Think how unfortunate I am to have lost, almost at the same time, my poor Jordan and my dear Keyserlingk. They were my family, and I think I am now a widower, an orphan