Question: what year was the county thats home to the Wolf Mountains founded?

Context paragraphs:
Tourkovounia: The Tourkovounia (Greek: Τουρκοβούνια ), also known as Lykovounia (Λυκοβούνια, "wolf mountains") and in Antiquity called Anchesmos (Ἀγχεσμός ), is a hill range in Attica.  The name has also been transferred to a neighbourhood of Athens and a neighbourhood in Keratsini.

Wolf Point, Montana: Wolf Point is a city in and the county seat of Roosevelt County, Montana, United States.  The population was 2,621 at the 2010 census.  It is the largest community on the Fort Peck Indian Reservation.  Wolf Point is the home of the annual Wild Horse Stampede, held every year during the second weekend of July.  Wolf Point's Wild Horse Stampede is the oldest rodeo in Montana, and has been called the "Grandaddy of Montana Rodeos".

Josh Wolf (journalist): Joshua Selassie "Josh" Wolf (born June 8, 1982) is an American freelance journalist and internet videoblogger who was jailed by a Federal district court on August 1, 2006 for refusing to turn over a collection of videotapes he recorded during a July 2005 demonstration in San Francisco, California.  Wolf served 226 days in prison at the Federal Correctional Institution, Dublin, California, longer than any other journalist in U.S. history has served for protecting source materials.  After Wolf released his video outtakes to the public, U.S. District Judge William Alsup ordered his release on April 3, 2007.  In 2007, Wolf ran for mayor of San Francisco against incumbent Gavin Newsom (finishing in 8th place with about 1 percent of the vote).  The next year Wolf accepted a position at the "Palo Alto Daily Post" where he reported on the San Mateo County government and that of several cities within the county.  In 2011, Wolf graduated from the UC Berkeley Graduate School of Journalism and his thesis film "Police Tape" received the Reva and David Logan Prize for Excellence in Investigative Reporting.

Wolf Mountains: The Wolf Mountains, el.  4842 ft , sometimes referred to by local people as the Rosebud Mountains, and also known to the Crow Indians as the Wolf Teeth Mountains, are a mountain range east of Lodge Grass, Montana in Big Horn County, Montana.

Little Wolf Mountains: The Little Wolf Mountains, el.  4800 ft , is a small mountain range southwest of Colstrip, Montana in Big Horn County, Montana.

Yangming Mountains: The Yangming Mountains (), historically known as "Yanghe Mountains" (陽和山), are a group of mountains located in Yongzhou, southwestern Hunan, also the series of mountains of Dupang Range.  The mountains lies east of the Xiao River, The main range of the mountains are located in the northeastern Shuangpai County, its branches stretch to Lingling, Qiyang and Ningyuan counties.  The Yangming Mountains are the location of "Wangfotai Peak" (望佛台), which at 1,625 m is the highest point in the county of Shuangpai.  It is home of Yangmingshan National Forest Park.

Big Horn County, Montana: Big Horn County is a county in the U.S. state of Montana.  As of the 2010 census, the population was 12,865.  The county seat is Hardin.  The county, like the river and mountain range, were named for the bighorn sheep in the Rocky Mountains.  The county was founded in 1913.  It is immediately to the north from the northern Wyoming state line.

Wolf Park: Wolf Park is a nonprofit education and research facility which was established in 1972 by Dr. Erich Klinghammer.  Along with research and seminars on wolf behavior, particularly reproductive and inter-pack social behavior, Wolf Park provides interpretive programs to school groups throughout the year by prearrangement.  They are also open to the general public from May through November and Saturday evening for Howl Nights.  The park is home to several packs of gray wolves, plus coyotes, foxes, and bison.  They are incorporated under Wolf Park, Inc. which is located in the small town of Battle Ground, Indiana, United States.

Wolf Mountains Battlefield: Wolf Mountains Battlefield/Where Big Crow Walked Back and Forth was the site of the Battle of Wolf Mountain, the last major combat of the Great Sioux War of 1876-77.  It was added to the National Register of Historic Places in 2001, and was designated a National Historic Landmark in 2008.

Battle of Wolf Mountain: The Battle of Wolf Mountain, also known the Battle of the Wolf Mountains, Miles's Battle on the Tongue River, the Battle of the Butte and called the Battle of Belly Butte by the Northern Cheyenne, occurred January 8, 1877, in southern Montana Territory between soldiers of the United States Army against Lakota Sioux and Northern Cheyenne warriors during the Great Sioux War of 1876.  It was fought about four miles southwest of modern-day Birney, along the Tongue River.  In 2001, the Wolf Mountains Battlefield was listed on the National Register of Historic Places.  It was raised to the status of National Historic Landmark in 2008.

Supporting paragraphs: Wolf Mountains Big Horn County, Montana
Answer: 1913