Vladimir II Monomakh
The Germanic form, Waldemar or Woldemar (derived from the elements Wald (power, brightness) and Mar (famous), is sometimes traced to Valdemar I of Denmark (1131 – 1182) named after his Russian maternal grandfather, Vladimir II Monomakh. The Germanic name is reflected in Latvian Voldemārs and Finnic (Finnish and Estonian) "Voldemar".