1. The first is a name for a saddle tree maker, a very important occupation seven hundred or more years ago. A saddle tree is a wooden frame around which the saddle is formed with leather. It comes from the Old French "fustier", itself originating from the word "fustre", meaning a block of wood.
2. Secondly, the name may describe a maker or user of "forcetier", which are steel shears widely used in both agriculture and textile production.
3. A third possibility is that Foster is an alternative or dialectal spelling of Forester, a term which described a civil officer in charge of a forest.
4. Lastly the derivation could be from a shortened spelling of the Olde English pre 7th Century compound "cild-fostre", and as such an occupational nickname for a foster parent or possibly a foster child.
For more information visit the Internet Surname Database.
(why not try the search option to find the origin of your own surname)
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Here are some more examples of other names in my family history and what they mean:
Petty ;- derives from the medieval Anglo-Norman French term "petit". It was used as a nickname for a small person, as in Walter le Petiit, to distinguish the younger of two bearers of the same given name.
Appleby ;- is of Norse-Viking origin, and is a locational name from any of the various places named with the Old Norse "apall" meaning apple, plus the Old Norse "-byr", a farm or settlement.
Rutt ;- has two possible origins. Firstly it may be a byname applied to a cheerful person. If so then the origin is the Old English pre 7th century word "rot" meaning glad. Secondly it may be a metonymic occupational name for a musician, one who played the "rote", a medieval stringed instrument.
Burke ;- is topographical, and originates from residence by, or probably the ownership of, a fortress on a hill. The derivation is from the Olde English pre 7th Century "burh", or the Anglo-Saxon "burg".
Again, for more information visit the Internet Surname Database.