For the children of Josiah Arnold and his wife, (one submission has her name spelled differently as Almira), I found Helen Elizabeth b. 1848, Amanda Amelia b. 1849, Henry b. 1854, Charles b. 1858, Mary b. 1861, Katie b. 1866. Marriage 28 October 1845.
There was an entry for a marriage of Josiah Arnold b. 1821 PA and Almira Day in Athens, OH for 28 October 1845.
I don't know what to make of the variance in spelling of her first name. Thanks for the additional information, but I did not find her parents names.