Some sources, including Norway Select Baptisms, say b. 1 Apr 1851, bapt. 27 Apr 1851. This is incorrect. According to the church birth records on Digitalarkivet, that 1851 Anne Tostensdatter is the daughter of Tosten Olsen Sonderol and Randi Olsdatter.
The 1848 Anne (b. 23 Jul 1848, bapt. 24 Sep 1848) is the daughter of Tosten Olsen and Randi Thronsdatter Grihammer.