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

Context paragraphs:
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.

Maury Street Marker, Jefferson Davis Highway: Maury Street Marker, Jefferson Davis Highway is a historic route marker located on U.S. Route 1, or Jefferson Davis Highway, in Richmond, Virginia.  It was erected in 1935, by the United Daughters of the Confederacy (UDC).  It is one of 16 erected in Virginia along the Jefferson Davis Highway between 1927 and 1947.  The marker is an inscribed granite slab with smooth flat faces and rough-cut edges.  It measures 45 in tall, 25 in wide and 9 in thick.  The stone is engraved with the text "Jefferson Davis Highway Erected by Elliott Grays Chapter United Daughters of the Confederacy 1935".

Jefferson Davis Parish, Louisiana: Jefferson Davis Parish (French: "Paroisse de Jefferson Davis" ) is a parish located in the U.S. state of Louisiana.  As of the 2010 census, the population was 31,594.  The parish seat is Jennings.  Jefferson Davis Parish is named after the president of the Confederacy during the American Civil War, Jefferson Davis.  It is located in southwestern Louisiana and forms a part of the Acadiana region.

Unknown Confederate Soldier Monument in Horse Cave: Unknown Confederate Soldier Monument in Horse Cave

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.

Denton Confederate Soldier Monument: The Denton Confederate Soldier Monument is an outdoor Confederate memorial installed downtown Denton, Texas, in the United States.  It was funded and erected in 1918 by the Katie Daffan Chapter of the United Daughters of the Confederacy.  The statue depicts an armed Confederate soldier standing on an arch with the inscription, "Our Confederate Soldiers".  The monument was named a Texas Historic Landmark in 1970, a National Historic Registry landmark in 1977, and a Texas State Archeological Landmark in 1981.  The monument was vandalized in 2015.  One local resident has been working to remove the memorial since 2000.

Confederate Monument in Glasgow: The Confederate Monument in Glasgow, Kentucky, built in 1905 by the Kentucky Women's Monumental Association and former Confederate soldier John A. Murray, commemorates those who gave their lives in service for the Confederate States of America.  It is located on the side of Glasgow's courthouse.  The Confederate soldier, made of bronze, is at parade rest, and features details such as a bedroll, canteen, kepi hat, and rifle.  It stands on a limestone pedestal.

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.

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).

John Holt Duncan: John Holt Duncan (1820–1896) was one of eight founders of Beta Theta Pi, a prominent college fraternity founded at Miami University in 1839 and was its first president.  He made a career in law as a lawyer and judge in Houston & Bexar County, Texas.  He served as a Confederate Artillery Captain in the 31st Texas Cavalry during the Civil War.  He lost a leg as a result of a battle wound on September 20, 1862 at the First Battle of Newtonia.  He was taken in by an Old Confederate soldier's family.  When the soldier returned home, Duncan was found by the authorities.  Because housing a confederate soldier was punishable by death, the old soldier was executed in front of his wife and family.  The family begged for Duncan's life to be spared and it was.  John Holt Duncan spent the rest of his life caring for the family and he died penniless because of it.  After the war he moved to Houston, Texas where he practiced law (district justice 1864-65, city attorney 1877-79.  He became Chief Justice of Bexar County.  He died in the Confederate Old Soldier's Home in Austin, Texas in 1896 and was buried in the Confederate Veterans section of the Texas State Cemetery.

Supporting paragraphs: Tomb of the Unknown Confederate Soldier Beauvoir (Biloxi, Mississippi)
Answer: Beauvoir