Ancestral Farm

I have been working on my family ancestry for 20+ years. My aunt visited the family farm in Norway a long time ago and given her age, she can't recall where it was. I found the records on the 1865 Census that said that they were on Ytteroy on a farm with this information: Census district: 008 2det Help Rural residence: 0021 Fjeldstuen Parish: Ytterøen Parish: Værran I can't find any maps and I assume the farm was absorbed a long time ago. Any chance someone might have some ideas on how I can locate the area?