> siabhrach
> a fairy, sìobhrag (Arran), siobhrag (Shaw), sìbhreach
(M`A.), > Irish siabhra, Early Irish siabrae, siabur, fairy,
ghost, Welsh > hwyfar in Gwenhwyfar, Guinevere (?): *seibro-:Could
Celtic *seibro- > be related to ON Síf ?
Old Irish siabar "magic; supernatural being" and Welsh *hwyfar (it's
not attested on its own - only in the name Gwenhwyfar) come from
Proto-Celtic *seibarV-, not *seibro- (pedantic, I know). The root is
supposed to be PIE *sei- "to bind" (via a suffixed byform *sei-bh-).
Here is what the Leiden Old Norse etymological database [Koebler]
has to say about Sif:
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Old Norse: 0000">Sif
Paradigm: st. F. (jo:)
Meaning (German): Go"ttin, Thors Weib
Compare: sifjar
Proto-Germanic: *sebjo:
Etymology: germ. *sebjo:, st. F. (o:), Sippe, Verwandtschaft; s.
idg. *su_ebho-, *su_ebh-, *sebho-, *sebh-, *su_obho-, Adj., eigen,
eigenartig, Pk 883; vgl. idg. *se-, Adv., Pron., abseits, getrennt,
fu"r sich, sich, Pk 882
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- Chris Gwinn