More details re the officiers of the Berg cavalry appear to be found in:

Voigt, Gunther. Deutschlands Heere bis 1918: Ursprung und Entwicklung der einzelnen Formationen, Volume 7 - p. 262ff.

I do not have this particular volume - perhaps a colleage can look it up and provide the information?

The bio for Toll, Ludwig Ernst Philipp von (1775-1851) can be found in Bd. 5, p 437 - bio 1632 of

Priesdorf, Kurt von. Soldatisches Fuhrertum. 10 vols. Hamburg, 1936-45.

I do not have this volume. Could someone post this bio?