Hello, I am trying to find research materials or help of any kind to translate my Swedish surname, (Nilsson) to Old Swedish or even a Runic translation. 
My family immigrated from Southwest Sweden so I would like to find out the variation used there from the 7th to 11th centuries. I would be extremely grateful to be directed to a reliable source to obtain the translation from directly.
Any help would be appreciated.

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Nina Nilson
1859 SW Hungry Hill Drive
Grants Pass, OR 97527
619-822-0767