Bedford Township was formed in 1767 within Cumberland County. Then, in 1775, Frankstown Township was formed out of the northern third of Bedford Township, along with a portion of Barre Township. In 1785, Woodberry Township was formed out of the southern part of Frankstown Township along with an additional small portion of Bedford Township.
In 1794, St. Clair Township was formed from a portion of Bedford Township; it was located adjacent to the western half of Woodberry and bordered along that township's southern boundary. In 1798, that western part of Woodberry Township (lying to the west of Dunnings Mountain range, between it and the Allegheny Mountain range) was separated to be formed into Greenfield Township.
Thirty-six years after the formation of Greenfield Township, and forty after St. Clair Township was formed, Greenfield was divided in two along an east-west line and St. Clair was divided similarly in two along an east-west line although, in both cases, the two halves were not the same size. The southern third of Greenfield and the northern quarter of St. Clair were combined into a new township that was named: Union. In 1846, when Blair County was erected out of Huntingdon and Bedford, the remaining two-thirds of Greenfield were absorbed into the new county. The entire region that had been formed as Union remained under the jurisdiction of Bedford County.
In 1812, St. Clair Township was again divided into two parts, the southern two-thirds being formed into a new township: Napier. Union had been formed in 1834 from portions of Greenfield and St. Clair Townships. In 1834, when Union Township was formed, the bounds of the new township included the region occupied by the present-day townships of Kimmel, King and Lincoln. The northern third of St. Clair remained as a single township until 1875. In that year, the remaining St. Clair Township was divided into two approximately equal sized parts by a north-south line that followed along the summit of Chestnut Ridge. Both new townships retained the name of St. Clair, simply adding the word East to the one and West to the other.
Union Township would undergo its first division in 1876. Divided into two unequally sized parts, the western half retained the name, while the eastern half was given the name: King Township. Kimmel Township was formed out of the northern half of King and a portion of Union in 1889. And finally, in 1899, the last township to be formed within Bedford County came into existence with the formation of Lincoln Township out of Union by dividing it horizontally.
Although no records are extant to explain the naming of the new township, the new township was probably named in honor of Abraham Lincoln.
