There are five Keiths in Fritz's life! [ETA, more have turned up since the initial write-up, but I only recently found them and have very little info on them.] It's very easy to get them confused, and most people have at one point or another. Including published authors. So we start with a who's who.
( Straightening out the several Keiths )For fic research purposes as much as anything, here's pretty much everything I know about Peter Keith. [ETA: see the Eulogy section below, which adds a lot more.]
( Peter Keith )Now, my own thoughts on why Peter felt so neglected when he got back in the 1740s. It's purely speculative, but it's grounded in the little evidence we have.
( What went wrong )( Letter from Fritz )Oh look, it's a much more concise chronology!
( Chronology of Peter's life )The eulogy from the Academy of Sciences, written shortly after Peter's death:
( Eulogy )( Trinity College )( Envoy )LettersSome letters, evidently between him and Fritz, survive in the
Prussian archives. We have not yet gone to the trouble of purchasing a copy, deciphering the handwriting, and figuring out the French, but we might someday!
( Knobelsdorff & the Tiergarten )( Residences )( Sons' Residences )( Records: Peter's son's baptism, Peter's wife's burial )( Knyphausen relatives )( 1730 Flutes )