Lawyer & jurist. Chief U.S. prosecutor, Nuremberg war crimes trials in Germany after World War II. Associate Justice, U.S. Supreme Court, 1941-54; noted for his defense of civil liberties. Served in President Franklin D. Roosevelt's administration starting in 1934; U.S. Solicitor General, 1938-39, & Attorney General, 1940-41. Jackson was born on the family farm here in Spring Creek.

At oil spring across river at this point J.L. Grandin began second well drilled specifically for oil, Aug., 1859, after Drake's success. It was dry, showing risks involved in oil drilling.

Across the river from here deposits of red ochre and adjacent petroleum springs provided the Indians with raw materials for face and body paint.

An advance party of Brodhead's expedition of 1779 into the Seneca country had a skirmish here with 30 or 40 Indians, the only fighting which took place in that campaign, and the only Revolutionary battle in northwestern Pennsylvania.

Surveyed Donation Lands in this area in 1785. Later bought a large tract of land, developed by his son Callender and grandson, Dr. William Irvine. One of the tenant houses of the estate stands opposite.

A famous Indian village at the junction of Brokenstraw Creek and the Allegheny, visited by Celoron in 1749 and destroyed by Brodhead in 1779. Burial mounds excavated here indicate the antiquity of this site.

In 1749 a French force under Celoron de Blainville entered the Ohio valley by way of Chautauqua Lake and Conewango Creek. A lead plate was buried at the mouth of the Conewango claiming the area for France.

Mid-18th century Seneca village located on site of present Warren. First mentioned by Bonnecamps, in 1749, as composed of 12 or 13 cabins. Name in Iroquois means "below the riffles."

Native Americans, French explorers, and Revolutionary War soldiers all used this 8-mile cross-country portage to access the upper reaches of the Allegheny River from Conewango Creek. This historic trail provided travelers with a preferable alternative to the arduous 26-mile upriver trip to the heart of the Seneca Nation. Several lower branches of Seneca Crossing converged near here, the trail's mid-point. The route continued to Kinzua.

Formed March 12, 1800 from Allegheny and Lycoming counties. Named for Gen. Joseph Warren, killed at Bunker Hill. Warren, the county seat, was laid out in 1795. Long known for its oil and timber operations, and site of the Cornplanter Indian Grant.