Question: What is the name of Jefferson Davis's estate in Biloxi, Mississippi, where there is a Tomb of the Unknown Confederate Soldier?

full_context: Document 1: Lake Village Confederate Monument: The Lake Village Confederate Monument is located on the median of Lakeshore Drive, between Main and Jackson Streets in Lake Village, Arkansas. The marble monument depicts a Confederate Army soldier standing in mid stride with his left foot forward. His right hand holds the barrel of a rifle, whose butt rests on the monument base. He carries a bedroll draped over his left shoulder, and wears a Confederate cap. A cannon that served as a fountain was once part of the sculpture, but is now missing. The statue is about 6 ft high and 2 ft square; it rests on a marble foundation that is 20 ft long, 12 ft wide, and 8 ft high. The monument was erected in 1910 by two chapters of the United Daughters of the Confederacy at a cost of about $3,000.
Document 2: Brierfield Plantation: Brierfield Plantation was a cotton plantation located in Davis Bend, Mississippi, south of Vicksburg and the home of Confederate president Jefferson Davis. The more than 1,000 acre plantation was given to Davis by his much older brother, Joseph E. Davis (1784-1870), and had previously been a part of Joseph Davis's much larger Hurricane plantation which it adjoined on a bend of the Mississippi River twenty miles from Vicksburg. With financial assistance and slaves given by his brother, Jefferson Davis became a successful planter on the acreage following his brief first marriage to Sarah Knox Taylor (who died of malaria a few months after their wedding); after his second marriage to Varina Banks Howell in 1845, Davis erected a large comfortable frame house on the property that was home to himself, his wife, their children, as well as Davis's widowed sister and other relatives.
Document 3: Jeff Davis County Courthouse (Texas): 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.
Document 4: Livingston's Hideout: Livingston's Hideout was most likely the only permanent Confederate military camp inside Kansas during the Civil War. It was in the very corner of southeast Kansas, in the very corner of Cherokee County, Kansas. It was about 2 mi north of the border with Indian Territory and it was less than 100 ft west of the border with Missouri. It was 5 mi west of Baxter Springs, where a series of Union military posts existed from 1862 to 1863. Thomas R. Livingston became a leader of a group of Confederate guerrillas in the area, becoming first a captain and then a major. He needed locations to hide himself and his guerrillas from pursuing Union troops and this hideout suited the guerrillas well. The guerrillas sought to spy on Union forces and raiding units he found small enough to defeat.
Document 5: Veteran's Monument in Covington: The Veteran's Monument, also called the War Between the States Veteran's Memorial, in Linden Grove Cemetery of Covington, Kentucky was built in remembrance of both Union and Confederate veterans of the American Civil War. It is one of only two memorials in the Commonwealth of Kentucky that celebrate soldiers of both sides of the conflict. The American Legion dedicated the monument on May 30, 1933, which was that year's Memorial Day.
Document 6: Port Hudson State Historic Site: The Port Hudson State Historic Site is located on the Mississippi River north of Baton Rouge in East Feliciana Parish, Louisiana, just outside the limits of Port Hudson and in the vicinity of Jackson. The site preserves a portion of the fortifications and battle area of the longest siege in American history, during the American Civil War from May 23 through July 9, 1863. The state of Louisiana maintains the site, which includes a museum about the siege, artillery displays, redoubts, and interpretive plaques. Living history re-enactments are held each year. It was designated a National Historic Landmark in 1974, significant as the first place where African-American military units fought for the Union Army under African-American field leadership.
Document 7: Star City Confederate Memorial: The Star City Confederate Memorial is located at the southwest corner of the town square of Star City, Arkansas. The marble monument depicts a Confederate Army soldier standing in mid stride with his left foot forward. His hands hold the barrel of a rifle, whose butt rests on the monument base. The statue is about 6 ft high and 2 ft square; it rests on a marble foundation that is 20 ft long, 12 ft wide, and 8 ft high. The monument was erected in 1926 by a local chapter of the United Daughters of the Confederacy at a cost of about $2,500.
Document 8: USRC Jefferson Davis (1853): USRC "Jefferson Davis" was a United States Revenue Cutter Service topsail schooner of the "Cushing" class built in 1853. She was named for Jefferson Davis, then United States Secretary of War under President Franklin Pierce, and later president of the Confederate States of America.
Document 9: Confederate States Secretary of War: Confederate President Jefferson Davis was twenty-third Secretary of War of the United States, serving under U.S. President Franklin Pierce from March 7, 1853 until March 4, 1857. However, he never served in this capacity in the Confederate States.
Document 10: Jefferson Davis Memorial Historic Site: Jefferson Davis Memorial Historic Site (also known as the Jefferson Davis Capture Site) is a 12.668 acre state historic site located in Irwin County, Georgia that marks the spot where Confederate States President Jefferson Davis was captured by United States cavalry on Wednesday, May 10, 1865. The historic site features a granite monument with a bust of Jefferson Davis that is located at the place of capture. The memorial museum, built in 1939 by the Works Progress Administration, features Civil War era weapons, uniforms, artifacts and an exhibit about the president's 1865 flight from Richmond, Virginia to Irwin County, Georgia.
Document 11: Beauvoir (Biloxi, Mississippi): The Beauvoir estate is notable as the historic post-war home (1876-1889) of the former President of the Confederate States of America, Jefferson Davis, (1807/08-1889), (who was also former U.S. Representative, (1845-1846), and more influentially as United States Senator from Mississippi, (1847-1851, 1857-1861) and in between U.S. Secretary of War, (1853-1857), under 14th President Franklin Pierce). Its construction was begun in 1848 facing the Gulf Coastline (Gulf of Mexico) at Biloxi, Mississippi. It was purchased earlier in 1873 by the planter Samuel Dorsey and his wife Sarah Dorsey. After her husband's death in 1875, the widow, Sarah Ellis Dorsey learned of former Confederate President Jefferson Davis' difficulties. She invited him to visit at the plantation and offered him a cottage near the main house, where he could live and work at his memoirs (""Rise and Fall of the Confederate Government""). He ended up living there the rest of his life. The house and plantation have since been designated as a National Historic Landmark, recognized and listed by the U.S. Department of the Interior and its National Park Service (established 1916).
Document 12: Unknown Confederate Soldier Monument in Horse Cave: Unknown Confederate Soldier Monument in Horse Cave
Document 13: Jefferson Davis: 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.
Document 14: Behavior Cemetery: Behavior Cemetery is a historic cemetery on Sapelo Island outside Hog Hammock, Georgia. The African-American cemetery is believed to date to before the American Civil War although the earliest marker is dated to the late 19th century. The cemetery is located in the center of Sapelo Island, towards the south end, 1‑1/4 miles west of Hog Hammock. It was originally associated with a former community named "Behavior" and slaves of the Thomas Spalding Plantation. An example of African-American burial grounds, the cemetery's grave markers include short posts at either end of the graves with epitaphs on wooden boards nailed to the surrounding trees and personal items included with the deceased. More recent tombstones are cement, granite or metal. It may have been a slave burial ground and is located near the former slave quarters of Thomas Spalding's plantation and the Sugar Mill Complex west of the cemetery. In 1996, it was still in use and was the only cemetery associated with the African American community on Sapelo Island.
Document 15: Tomb of the Unknown Confederate Soldier: The Tomb of the Unknown Confederate Soldier is a tomb on the grounds of Beauvoir in Biloxi, Harrison County, Mississippi, that holds the remains of an unidentified Confederate soldier of the American Civil War.
ground_truth: Beauvoir