Castledine Family History
Castledine Surname Meaning
Probably a variant of Castleton. There is a group of 17th-18th cent. records of similar names with a range of endings suggesting reinterpretation of the final unstressed syllable of a name which was unfamiliar in the place where it was written down:
Castleden -dene -don -down -ton -town -tyne and so on.
Source: The Oxford Dictionary of Family Names in Britain and Ireland, 2016
