Unknown, circa 1865

I was able to find another tintype (not from this photo collection) that has the exact same sleeve, which is dated 1865.

 

I estimate her age to be in the late 30s. If so, she was born in the late 1820s. On the Loper side of the family, this could be Marie Antoinette Loper, born 1827. On the Strong side, maybe Harriet N. Strong, born 1831.

Done