There are two alternatives for the family name:
- Variant of the English and French surname Morant , of unknown origin (morant "cubic" has been suggested).
- Anglicization of Irish Ó Mórain (“descendant of a person named Big”) or Ó Mughráin
- A surname of Old French origin.
- A surname of Irish origin.
- Any of a number of places in the USA named after persons with the surname.
- Etymology of Last Names, accessed on 2005-07-27
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