Not that I've found. Henckel's summing up of Marwitz' career (now at Rheinberg edited into the Marwitz Affair post) certainly doesn't include it. Lehndorff's summary of the Marwitz affair in his diary entry just says this about the initial Heinrich/Marwitz fallout (after Heinrich had successfully pleaded with Fritz to put Marwitz with the guards): Some time later, the Prince accused him of falsehood and bad manners, and banished him completely from his company. Nothing about Ferdinand. (And of course the diary entry ends with the note that Marwitz is now back in Heinrich's social circle.)
However, Ziebura mentions in her book what a treasure trove for Heinrich's life his letters to Ferdinand were, which Ferdinand all preserved, and which because they were seen as private, not political, previous biographers tended to ignore. It might be that she has it directly from the horse's mouth, so to speak ,i.e. maybe Ferdinand or Heinrich mention it at the time? But if so, she hasn't given us the quote.
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Date: 2020-07-26 04:51 am (UTC)However, Ziebura mentions in her book what a treasure trove for Heinrich's life his letters to Ferdinand were, which Ferdinand all preserved, and which because they were seen as private, not political, previous biographers tended to ignore. It might be that she has it directly from the horse's mouth, so to speak ,i.e. maybe Ferdinand or Heinrich mention it at the time? But if so, she hasn't given us the quote.