According to other sources, the first element "Wald" alternatively also means "brightness", "to be bright". Therefore Waldemar/Vladimir means "Famous Ruler" or "Bright and Famous".
Prince Waldemar of Prussia (full name Waldemar Wilhelm Ludwig Friedrich Viktor Heinrich) (1889–1945) was the firstborn child of Prince Albert Wilhelm Heinrich of Prussia and Princess Irene of Hesse and by Rhine, and a great-grandson of Queen Victoria. Like his little brother Heinrich and a number of his cousins, Prince Waldemar had hemophilia, though he defied the odds and lived to 56. He and his wife, Princess Calixta of Lippe–Biesterfeld, fled from the Red Army at the end of World War II, though after the Americans arrived in Bavaria, all medical supplies were diverted to treat concentration-camp survivors, and Prince Waldemar bled to death.
This name is also used in The Netherlands, where it is fairly rare. In 2010, there were a little over 220 bearers total in the entire country.A well-known Dutch bearer of this name is the actor Waldemar Torenstra (b. 1974).
Sounds too much like Voldemort ("t" is supposed to be silent) from Harry Potter.
― Anonymous User 8/6/2011
-5
A famous bearer of this name was Waldemar Milewicz, Polish war correspondent shot in Iraq in 2004. A famous fictional character with this name is Waldek Kiepski from a sitcom "The World According to the Kiepskis" ("Świat według Kiepskich").
The name is in no way a cognate of the Slavic name but rather derives from the Slavic name. It was first used by the Danish King Valdemar I, which was given to him by his mother, Ingeborg, daughter of Mstislav I of Kiev after her grandfather Vladimir Monomakh of Kiev. [noted -ed]
https://www.behindthename.com/name/waldemar/top/brazil
https://en.m.wiktionary.org/wiki/Waldemar#Portuguese
https://forebears.io/forenames/waldemar