Kinzua Township was a township in Warren County, Pennsylvania in the United States. The township was merged in 1963 into Mead Township. Warren County was formed on March 12, 1800 out of Allegheny County, with the original township of Brokenstraw being formed in that October from everything in the county west of the Allegheny River and Conew…Kinzua Township was a township in Warren County, Pennsylvania in the United States. The township was merged in 1963 into Mead Township. Warren County was formed on March 12, 1800 out of Allegheny County, with the original township of Brokenstraw being formed in that October from everything in the county west of the Allegheny River and Conewango Creek; Conewango Township was formed in March 1808 and consisted of the unincorporated eastern half of Warren County. On March 8, 1821, the county divided the two townships into twelve townships; Kinzua Township was incorporated out of portions of Brokenstraw Township and was originally township "Number Eight". On June 7, 1833, the southern half of Kinzua Township was used to create Sheffield Township. Portions of Kinzua, Pleasant, and Sheffield townships were incorporated on June 4, 1847 into Mead Township.