Cold stream or violent water
Caulder is a variant of the Scottish surname Calder. It is derived from the Old British words 'caled' meaning hard or violent and 'dwfr' meaning water, or potentially from the Old Norse 'kaldr' meaning cold.
Less common today
Caulder isn't in the latest US Top 1000. It last peaked at #5,078 in 2018.
US births per 5-year period, 1990βpresent (SSA data).