Nathaniel Treat, Sr. (December 29, 1798 – February 4, 1894) was a member of the Maine House of Representatives.
[2] Treat built sawmills, served as a bank president, and became involved in the lumber industry.
His former home in Orono, Maine, now known as the Nathaniel Treat House, is listed on the National Register of Historic Places.
In 1870, Treat moved to Monroe, Wisconsin, where he died on February 4, 1894.
[3] His grandson, Charles Treat, became a major general in the United States Army.