Marklen means, obviously, “Marx and Lenin,” derived from the elements Marks i Lenin. An alternate form was Marlen, Marlena or Marklena for girls.
Myuda means “International Day of Youth,” derived from the elements Medzhunarodniy Yunosheskiy Den. I kind of like this name, since it sounds vaguely Japanese, and I love Japanese names.
http://panzercentral.com/forum/viewtopic.php?f=96&t=36301 (penultimate post)