Trolezin means “Trotskiy, Lenin, and Zinovyev,” obviously simply taken from the elements Trotskiy, Lenin, i Zinovyev. It’s safe to assume this name was immediately discontinued after the Great Terror, when Stalin brainwashed the masses into thinking Comrades Trotskiy and Zinovyev were enemies of the people, and had both of them murdered.
Traktorina means, simply, “tractor.” The male form is Traktor. This name must’ve been given in homage to collective farming and the Five-Year Plans. Not a name I’d recommend for anyone!
http://panzercentral.com/forum/viewtopic.php?f=96&t=36301 (penultimate post)