Österby is a village in Noarootsi Parish, Lääne County, in western Estonia. It is the only village in the parish which has retained its historical Swedish name without an equivalent in Estonian.
http://en.wikipedia.org/wiki/%C3%96sterby
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That is another Österby!
The Österby in Uppland, Sweden referred to in the profile is today named Österbybruk:
http://sv.wikipedia.org/wiki/%C3%96sterbybruk