Question: When was the man that Fort Davis was named after born?

Context articles: Camden Fort Meagher
Jeff Davis County Courthouse (Texas)
Davis Mountains
Fort Davis, Alabama
Fort Davis High School
Fort Davis, County Cork
Fort Davis, Texas
Fort Davis National Historic Site
Fort Davis Independent School District
Jefferson Davis

Camden Fort Meagher is a coastal defence fortification close to Crosshaven, County Cork, Ireland.
 Together with similar structures at Fort Mitchell (Spike Island), Fort Davis (Whitegate), and Templebreedy Battery (also close to Crosshaven), the fort was built to defend the mouth of Cork Harbour.
 Though originally constructed in the 16th century, the current structures of the 45 acre fort (65% of which is underground) date to the 1860s.
 Originally named "Fort Camden" and operated by the British Armed Forces, the fort (along with other Treaty Port installations) was handed-over to the Irish Defence Forces in 1938.
 Renamed "Fort Meagher" in honour of Thomas Francis Meagher, it remained an Irish military installation until 1989 when the Irish Army handed the fort over to Cork County Council.
 It remained largely overgrown until 2010 when a group of local volunteers began restoration and development of the fort for heritage and tourism purposes.
 The fort was renamed "Camden Fort Meagher" and is now open seasonally to visitors, with exhibits on the fort's Brennan torpedo installation (the world's first "practical guided weapon") and one of the only resident 9/11 exhibits outside the United States.
The Jeff Davis County Courthouse is located in the town of Fort Davis, the seat of Jeff Davis County in the U.S. state of Texas.
 The courthouse was constructed between 1910-1911 and added to the National Register of Historic Places in 2002.
 The Texas Historical Commission (THC) has also designated the building as a Recorded Texas Historic Landmark since 2000 and, along with the surrounding courthouse square, as a State Antiquities Landmark since 2003.
 The surrounding county and county seat, along with the nearby historic frontier fort at Fort Davis National Historic Site, are named after Jefferson Davis, who served as U.S. war secretary at the time of the establishment of the fort and the town, and who would later become president of the Confederate States of America during the Civil War.
The Davis Mountains, originally known as Limpia Mountains, are a range of mountains in West Texas, located near Fort Davis, after which they are named in honor to Jefferson Davis.
 They are a popular site for camping and hiking and the region includes Fort Davis National Historic Site and Davis Mountains State Park.
 The historical and architectural value of the fort, along with the rugged natural environment of the park are a significant destination for tourism in Texas.
Fort Davis is an unincorporated community in Macon County, Alabama, United States, located on U.S. Route 29, 12.9 mi south of Tuskegee.
 Fort Davis has a post office with ZIP code 36031, which opened on June 4, 1891.
Fort Davis High School is a public high school located in the unincorporated community of Fort Davis, in central Jeff Davis County, Texas, United States.
 The school is operated by the Fort Davis Independent School District and classified as a 1A school by the UIL.
 In 2013, the school was rated "Improvement Required" by the Texas Education Agency.
Fort Davis (Irish: "Dún an Dáibhisigh"; previously "Fort Carlisle"), is a coastal defence fortification close to Whitegate, County Cork, Ireland.
 Together with similar structures at Fort Mitchell (Spike Island), Fort Camden (Crosshaven), and Templebreedy Battery (also close to Crosshaven), the fort was built to defend the mouth of Cork Harbour.
 Though used as a fortification from the early 17th century, the current structures of the 74 acre site date primarily from the 1860s.
 Originally named Fort Carlisle and operated by the British Armed Forces, the fort was handed-over to the Irish Defence Forces in 1938, and renamed Fort Davis.
 The facility is owned by the Department of Defence, and is used as a military training site with no public access.
Fort Davis is a census-designated place (CDP) in Jeff Davis County, Texas, United States.
 The population was 1,201 at the 2010 US Census .
 It is the county seat of Jeff Davis County.
 It was the site of Fort Davis established in 1854 on the San Antonio-El Paso Road through west Texas and named after Jefferson Davis, who was then the Secretary of War under President Franklin Pierce.
Fort Davis National Historic Site is a United States National Historic Site located in the unincorporated community of Fort Davis, Jeff Davis County, Texas.
 Located within the Davis Mountains of West Texas, the historic site was established in 1961 to protect one of the best remaining examples of a United States Army fort in the southwestern United States.
Fort Davis Independent School District is a public school district based in the community of Fort Davis in unincorporated Jeff Davis County, Texas (USA).
Jefferson Davis (born Jefferson Finis Davis; June 3, 1808 – December 6, 1889) was an American politician who served as the President of the Confederate States from 1861 to 1865.
 He was a member of the Democratic Party who represented Mississippi in the United States Senate and the House of Representatives prior to becoming president of the Confederacy.
 He was the 23rd United States Secretary of War, serving under U.S. President Franklin Pierce from 1853 to 1857.