Hello Boylemesiter,
Looks like a personal name (as many places are). It's the kinda research that needs detailed local knowledge (and library work etc).
If it is a personal name then maybe:
Bertel
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1. German, Swedish, and Danish: from a pet form of the personal name Berthold.
2. French: from a derivative of Old French berte ‘basket’, ‘pannier’.
Berthold
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German and Scandinavian: from the Germanic personal name Bertwald, composed of the elements berht ‘bright’, ‘famous’ + wald ‘rule’. The second element has been altered by association with German hold ‘lovely’, ‘splendid’.
take your pick!
WFx
