Wilmar is of German origin, derived from the Old Germanic elements "wil" meaning "will" or "desire," and "mari" which is a short form of the name Marianus meaning "of Mars." Thus, Wilmar translates to "strong in war" or "strength of Mars." This name was particularly popular during the Middle Ages but has since become less common. It is not typically associated with any specific cultural traditions or celebrations.
"Wilmar is quite uncommon; it had a brief spike around 1916 and again in the late 1920s, but overall, only 16 children were named Wilmar between 1916 and 1930."