El Rio is a small unincorporated community in Ventura County, California, United States, on the northeast side of the 101 Freeway and Oxnard, and south of the Santa Clara River.
 The town was founded in 1875 and named New Jerusalem, California by the owner of general store who became the first postmaster in 1882.
 In 1885, a school and Santa Clara Catholic Church were built.
 Located near where the coastal railroad line crosses the Santa Clara River, the town's name was changed to El Rio around 1900.
 The former wagon river crossing route became the Ventura Freeway which separates the community from the commercial developments that grew up on the southwest side of the freeway.
 That portion of the historic community and sections closer to the river have been annexed to the city of Oxnard.
 Vineyard Avenue (State Route 232) is the central business district for the largely residential community.
 The population was 7,198 at the 2010 census, up from 6,193 at the time the 2000 census was enumerated.
 For statistical purposes, the United States Census Bureau has defined a portion of the unincorporated area as El Rio census-designated place (CDP) which does not precisely correspond to the historical community that is much larger with significant portions having been annexed to the city of Oxnard.
Sixes, home to approximately 14,540, is an unincorporated community in western Cherokee County, Georgia, United States, located about three miles west of Holly Springs and near the eastern shore of current-day Lake Allatoona.
 The community is located in the Georgia Gold Belt, which runs southwest to northeast along the southern edge of the Blue Ridge mountains.
 The Sixes Gold Mine, a now-defunct gold mine dating back to the early 19th century, was located just to the northwest.
 In addition, the community is home to the Sixes Mill, which was originally built around 1820 by early gold prospectors and later rebuilt "circa" 1880.
 The mill has been well preserved and is still located off Sixes Road.
 There are two theories on how Sixes derived its name.
 The first theory attributes the name to Fort Hinar Sixes, a Cherokee Indian removal fort that was located in the area along the Trail of Tears.
 The second holds that the name is derived from an old Cherokee village that was located near the Etowah River named "Sutali" — the Cherokee word for the number six.
 Sixes also lent its name to Fort Sixes, an 1830s US Army fort that served as a removal collection point for Cherokee prior to the Trail of Tears.
 Sutallee, a community that sits on the opposite side of the Etowah River (now Lake Allatoona) in western Cherokee County, also derives its name from this Native American village.
 Today, Sixes is a growing suburban community with many large, upscale residential neighborhoods, including BridgeMill.
 The area is served by two elementary schools (Sixes & Liberty); one middle school (Freedom); and two high schools (Woodstock & Cherokee).
Call is an unincorporated community in central Newton County, Texas, United States.
 It lies along State Highway 87 south of the city of Newton, the county seat of Newton County.
 Its elevation is 95 feet (29 m), and it is located at (30.6124261, -93.8743461).
 Although Call is unincorporated, it has a post office, with the ZIP code of 75933.
Bee House is an unincorporated community in Coryell County, Texas, United States.
 Bee House is located on Farm to Market Road 183 11 mi west of Gatesville.
 Founded in the 1850s, the community was originally named Boyd's Cove for a James Boyd.
 The community's post office opened in 1884; residents wanted the post office to be named Bee Hive for the bees found in the area, but the U.S. Postal Service named it Bee House instead.
 The community also had a school and a Masonic lodge, and as of the 1890s it had four churches.
 The community still had a church and post office as of the 1980s.
 Its population was 40 in 2000.
Cockrell is an unincorporated community in Jackson County, in the U.S. state of Missouri.
Conway is an unincorporated community in Carson County, Texas, United States.
 Conway is located along Interstate 40 in southern Carson County.
 The community began in 1892 when the Lone Star School was established in the area; the school was the first permanent school in the Texas Panhandle.
 The first post office opened in the community in 1903, and the town was platted in 1905; it was at this time that it was named after county commissioner H. B. Conway.
 By 1912, Conway had a church and various businesses, and the town formed a community club in the 1920s.
 In 1943, the town's school consolidated with the Panhandle school district, and the school building became a community center.
 The town's post office closed in 1976.
 As of 2016, Conway had a reported population of three.
Jackson County is a county located in the western portion of the U.S. state of Missouri.
 As of the 2010 census, the population was 674,158.
 making it the second-most populous county in the state (after St. Louis County).
 Although Independence retains its status as the original county seat, Kansas City serves as a second county seat and the center of county government.
 The county was organized December 15, 1826 and named for President Andrew Jackson (elected 1828).
Bull Mountain is an unincorporated community and census-designated place in Washington County, Oregon, United States.
 Bull Mountain is located mostly on a hill for which the community is named.
 It is bordered on the east by Tigard, on the south by King City, and Beaverton lies to the north.
 The north-eastern part of the Bull Mountain hill is now within the Tigard city limits, as the city has steadily annexed portions of the unincorporated region on its boundary.
 In 2010, the community became a census-designated place with a population of 9,133.
 Fire protection and EMS services are provided through Tualatin Valley Fire and Rescue.
Tormey, formerly known as El Cierbo (Spanish for: "The Deer"), is an unincorporated community in Contra Costa County, California, United States.
 It is located between Rodeo and Crockett on the edge of the ConocoPhillips oil refinery in Rodeo.
 It is 6.5 mi west-northwest of Martinez, at an elevation of 20 feet (6 m).
 The community is home to several dozen homes and the former offices of the John Swett Unified School District.
 Originally a company town for management and refinery workers at the Selby Smelter, American Smelting and Refining Company.
 Tormey is located astride old U.S. Route 40, now San Pablo Avenue.
 Old County Road offshoots from it and at the end there is a water reservoir.
 The former Southern Pacific Railroad and now its new owner since 1996, the Union Pacific Railroad, skirts the bayshore side of Tormey.
 In the 1940s and 50's the Tormey Store served many of the grocery needs of the residents.
 The Hogg family managed the store with its single gasoline pump for many years.
 Although the area is unincorporated, many times it is referred to as being in the Crockett hills, or simply "the village" (by its residents), or the "refinery village".
 The ZIP Code is 94547.
 The community is inside area code 510.
 The town is named for Patrick Tormey, who purchased the property from the Ygnacio Martinez Rancho El Pinole estate.
Seabrook is an unincorporated community located within Upper Deerfield Township in Cumberland County, New Jersey, United States.
 The area is served as United States Postal Service ZIP code 08302.
 The unincorporated community and the census-designated Place Seabrook Farms within it are each named after Charles F. Seabrook, a businessman who at one point ran the largest irrigated truck farm in the world in this region.

Question: Who was the county named for in which the unincorporated community call Cockrell is located?
Answer: President Andrew Jackson