No. Helmholtz's "On the Sensations of Tone" (1862) was by far the most influential book on musical acoustics and would have set any such trend.

But, I just looked up my copy, and he doesn't appear to use C=256, even right at the start where simple arithmetic might have been pedagogically useful. Instead he goes straight to A=440, which he credits to Scheibel in 1834. (And says how he's pissed off with the Academie Francaise for adopting A=435). There is a heck of a lot of arithmetic in the book and he manages to make it all pretty comprehensible without any "scientific" simplification.