Franklin Parish was created on March 1, 1843 from portions of Ouachita, Catahoula and Madison parishes through the efforts of Senator John Winn.  The parish was named "Franklin " in honor of Benjamin Franklin.  Land for a centrally located parish seat, Winnsborough (later Winnsboro) was purchased in 1844.  It was designated as the parish seat of government in 1846 and was incorporated on March 18, 1902 by Governor William Wright Heard.

When the Village of Winnsboro was officially incorporated in 1902, the man appointed to serve as the first mayor was Captain William Phillip Power. A native of Quebec, Canada, and a teacher, Power came to the United States at the age of 21.  He later served as captain of a Missouri Cavalry Company in the Confederate Army.

In 1865, he married Susan Desha and settled in Winnsboro.  The couple built their home in downtown Winnsboro across the street from what was later to become the site of the present day
U. S. Post Office.

Power became publisher of The Franklin Sun and served his community as postmaster, politician and a lay Methodist minister.  He and his wife had no children of their own, but opened their home to many orphaned children during their lifetime.

City records show the telephone came to Winnsboro in the year 1905; electricity, in 1914; and water and sewer service, in 1923,  In 1924, a volunteer fire department was formed.  In 1938 a bond issue to build the present municipal building was approved, and the following year citizens agreed to the purchase of the Landis municipal park property.  Most of the community's streets were hard surfaced after 1950.  On the fertile lands of the parish, cotton became king, and agriculture, the mainstay of the parish economy.