1) German surname 
In Irish mythology and folklore, a geis (ʃ; s`; plural geasa) is an idiosyncratic taboo, whether of obligation or prohibition, similar to being under a vow or spell. The Scottish Gaelic spelling `geas` is also common. ==Geis in Irish Mythology== A geis can be compared with a curse or, paradoxically, a gift. If someone under a geis violates the......
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