Coster Family History
Coster Name Meaning
English: metonymic occupational name for a grower or seller of costards (Anglo-Norman French, from coste ‘rib’), a variety of large apples, so called for their prominent ribs. In some cases, it may have been a nickname (from the same word) for a person with an apple-shaped (i.e. round) head. Dutch: status name for a churchwarden, from Late Latin custor ‘guard’, ‘warden’. Variant spelling of German Koster.
Source: Dictionary of American Family Names ©2013, Oxford University Press