Heill, Danr!
> Consulting my Old English Dictionary (or rather, the glossary in
> Mitchell and Robinson), I think the best interpretation is sige-gealdor,
> cognate with the ON sig-galdr "battle magic" that Haukur suggested.
I should note that I don't think the compound 'siggaldr' is actually
attested so we should mark it with an asterisk; *siggaldr. The closest
attested word seems to be 'sighljóð' meaning "battle sound".
I'm not fluent in Old English but it seems to me that in 'sige-gealdor'
neither of the g's is a plosive. I assume that when you read 'sigaldry'
you use a stop for the g. So my question is: Does it come from another
dialect? Does it come from Old Norse? Or is the modern word a "learned"
borrowing from the old language that doesn't show the historical phonetic
development?
And of course we could still be dealing with something different :)
Kveðja,
Haukr