Question: Where did the man who killed twenty California Indians establish a fort?

Context paragraphs:
Wiiwish: Wiiwish, also known as acorn mush, was one of the main food staples of California Indians.  Acorns were gathered in the fall before the rain came.  To harvest the acorns, California Indians would crack open the shell and pull out the inner part of the acorn.  This part of the acorn was then smashed with a mortar and pestle until it was a flour-like consistency.  This flour like substance was then leached several times with water until the acorn mush was no longer bitter (this also indicated that the mush was safe for consumption).  This mush was then cooked in a waterproof basket with hot rocks and then served.  California Indians continue to eat wiiwish both the traditional way and with alterations.  These alterations include using other tools to grind down the acorns such as a coffee grinder or/and adding sugar or other seasonings to the finished wiiwish.

2014 Bannu bombing: The 2014 Bannu Bombing was a bombing attack by the Taliban that killed twenty six Pakistani soldiers.  Thirty-eight other people were injured as a result of the bombing.

John Sutter: John Augustus Sutter (February 20, 1803 – June 18, 1880), born Johann August Suter, was a German-born Swiss pioneer of California known for establishing Sutter's Fort in the area that would eventually become Sacramento, California, the state's capital.  Although he became famous following the discovery of gold by his employee James W. Marshall and the mill making team at Sutter's Mill, Sutter saw his own business ventures fail during the California Gold Rush.  Those of his elder son, John Augustus Sutter Jr., were more successful.

Kern and Sutter massacres: The Kern and Sutter massacres refer to a campaign of terrorism on March 23, 1847 in which men led by Captain Edward M. Kern and rancher John Sutter killed twenty California Indians.

San Ardo Oil Field: The San Ardo Oil Field is a large oil field in Monterey County, California, in the United States.  It is in the upper Salinas Valley, about five miles (8 km) south of the small town of San Ardo, and about twenty miles (32 km) north of Paso Robles.  With an estimated ultimate recovery of 532,496,000 oilbbl of oil, it is the 8th-largest producing oil field in California, and of the top twenty California oil fields in size, it is the most recent to be discovered (1947).  As of the end of 2006, the principal operators of the field were Chevron Corp. and Aera Energy LLC.

Phillip Hamman: Phillip Hamman, Sr. (c. 1753 – August 3, 1832), known as "The Savior of Greenbrier", was an American frontier hero who was commended for bravery in the defence of Fort Donnally of Greenbrier County, West Virginia from a Shawnee attack in 1778.  Hamman and John Pryor volunteered to go to Greenbrier County and warn the people of an impending Indian attack by two-hundred warriors.  Chief Cornstalk's sister Nonhelema, a friend of the white people, painted Pryor and Hamman's faces as Indians.  Even though the Indians had several days' head start, the two were able to get ahead of the Indians and warn the inhabitants of the fort.  During the attack Hamman killed one man with his tomahawk as the Indian tried to force his way through the door of the fort.  Dick Pointer, an African slave of Col. Andrew Donnally, loaded a musket and shot at the invading Indians until he and Hamman could shut the door, saving the inhabitants of the fort.  Later Philip shot another Indian that had been underneath the flooring, trying to start a fire to burn down the building.  The women had a large pot of water on the fire in case of wounds, Philip raised a board in the floor and the women poured boiling water onto the Indian, causing him to run to the stockade fence, and in trying to climb the wall, Philip shot him.

Leitus: In Greek mythology, Leitus (Λήιτος ) was the son of Alector (Alectryon) and Polybule or of Lacritus and Cleobule, brother of Clonius, from Boeotia.  He sailed with the Argonauts and afterwards, as one of the suitors of Helen, fought in the Trojan War, where he killed twenty enemies, including Phylacus.  He commanded 12 ships.

1924 Nixon Nitration Works disaster: The 1924 Nixon Nitration Works disaster was an explosion and fire that claimed many lives and destroyed several square miles of New Jersey factories.  It began on Saturday morning, March 1, 1924, when an explosion destroyed a building in Nixon, New Jersey (an area within present-day Edison, New Jersey) used for processing ammonium nitrate.  The 11:15 a.m. explosion touched off fires in surrounding buildings in the Nixon Nitration Works that contained other highly flammable materials.  The disaster killed twenty people, destroyed forty buildings, and demolished the “tiny industrial town of Nixon, New Jersey.”

Mendocino Indian Reservation: Mendocino Indian Reservation, a former Indian reservation in Mendocino County, one of the early Indian reservations to be established in California by the Federal Government for the resettlement of California Indians.  It was established in the spring of 1856, in the vicinity of modern Noyo.  Its area was 25,000 acres (100 km2) and its boundary extended north from what is now Simpson Lane at to Abalobadiah Creek and east from the Pacific Ocean to a north–south line passing through the summit of Bald Hill.

Étienne Périer (governor): Étienne Périer was the fifth governor of the Louisiana colony.  He became governor in 1727.  His governorship was marked by the arrival of the first Ursuline nuns in New Orleans in 1727 to establish the first convent within the limits of what was to become the United States as well as a war against the Natchez Indians due to bad relations with Chepart, the commander at Fort Rosalie.  After agitating the Indians by demanding that they give up either their village or their land, the Indians launched an attack on November 29, 1729, and killed nearly three hundred persons at Fort Rosalie.  The French retaliated and by 1731 had killed or captured most of the Indians.  The captured Indians were sent as slaves to Santo Domingo, and the few remaining free moved further westward and joined the Chickasaw Indians.  This marked the end of the Natchez Indian nation.  In the same year, the Company of the Indies petitioned the King of France to take back their charter, thus ending their control of the colony.  Périer remained governor for two years after Louisiana was returned to the Crown but became frustrated with deteriorating relations with the Chickasaws and lost interest in the colony.  He resigned, and Jean-Baptiste le Moyne de Bienville was chosen to yet again serve as governor of the colony.

Supporting paragraphs: Kern and Sutter massacres John Sutter
Answer: Sacramento, California,