Valdemar is of Germanic origin, derived from the elements 'waltan' meaning 'rule', and 'mari' which refers to 'famous'. This name has been popular among royal families in Scandinavia throughout history, contributing to its timeless appeal.
"Over a century, Valdemar was popular from the late '20s to early '30s, peaking at 24 births in 2002. Recent years see fewer births, with 5 or less annually since 2011."