Louis Firman was born about 1830 in the state of New York to Benjamin Wise Firman and Abigal Rawley. Possibly in Livingston County based on my notes on the Firman family. She was married to Ira Wood October 19, 1956. They had at least 4 children from 1858 to 1869. All were born in Wisconsin.
She died May 10, 1881 age 51 and was buried May 11, 1881 at Woodville Cemetery. According to her death notice in the Waushara Argus, she had a "double stroke of paralysis" a bit over a week prior to her death. It also mentioned that she was active in the Congregational Church.
I have seen her name spelled Louis, Lois and Louise. The tombstone appears to say Louis.
The connection to the Brassfield surname is that her 2nd great grand daughter married a Brassfield.
The tombstone reads:
May 10 1881
(unreadable but probably 51)