The plantation was founded in 1762 by Colonel John Mullryne, who had emigrated from England to Charleston, South Carolina, initially, before moving south to Savannah. "The high ground, an extended river view, etc., made it one of the choicest sites near the city of Savannah and the first house was erected at that time, facing the center walk of the old garden," wrote Charles Colcock Jones in 1890. "This garden extended in terraces from the plateau to the river." The property fell into the possession of the Tattnall family after Josiah Tattnall, Sr., of Charleston, married Mary, the youngest daughter of John and Claudia Mullryne. Their second son, Josiah Tattnall, Jr., was born at the plantation. Per Claudia Mullryne's will and testament, dated December 10, 1781, her daughter Catharine Moore, a widow, was left "the mansion house called Bonaventure where she now resides." Upon Catharine's death, John and Claudia's grandson, the above-mentioned John Tattnall, would inherit the mansion, as well as "six hundred acres of land adjoining those of Josiah Tattnall." Josiah was also given a plantation called Placentia, adjoining Thunderbolt. Granddaughter Claudia Cattell Tattnall was deeded the "slaves etc." The first house, made of English brick, was destroyed by a fire on January 7, 1771. John Berendt wrote in his 1994 book Midnight in the Garden of Good and Evil that a formal dinner party, held by either John Mullryne or Josiah Tattnall, Sr., was in progress when one of the servants informed the host that the roof was ablaze and that nothing could be done to stop it. The host "rose calmly, clinked his glass, and invited guests to pick up their dinner plates and follow him into the garden", where they ate the remainder of their meals in the glow of the flames. The house was replaced by a brick mansion. When Savannahians ousted and arrested royal Governor James Wright in February 1776, John Mullryne and Josiah Tattnall aided his escape through Bonaventure to the HMS Scarborough, a British naval vessel nearby. In 1779 the mansion was used as a hospital during the siege of Savannah. After the Mullryne and Tattnall actions in support of the Crown six years earlier, the Bonaventure estate was confiscated by the Revolutionary government in 1782 and sold at public auction to John Habersham, a friend of the Tattnalls, who sold the property in 1788 to Josiah Tattnall, Jr., who had married two years earlier. His wife, Harriet , gave birth to three children who lived to adulthood: Edward, Harriet and Josiah III. John Mullryne, who, along with Josiah Tattnall, Sr., had fled the colonies during the Revolutionary War, died on January 6, 1786, in Nassau, Bahamas. Around 1785, Josiah Tattnall, Jr. returned to Savannah and eventually bought back the Bonaventure property from John Habersham. Harriet died in 1802 and was buried at the plantation beside her five children who died in infancy: Mary, Claudia, Josiah, John and Sally. Josiah, Jr. died in 1803, a year after his wife, while in the Bahamas. The orphaned children were raised in London, England, by their grandfather. The mansion was destroyed, by another fire, in 1804. In 1817, Josiah Tattnall, Jr.’s children reclaimed their family's lands. After his sister's death in 1819 and his brother's in 1832, Bonaventure passed solely to Josiah III. He had joined the United States Navy in 1812 and fought in the Mexican–American War. The estate remained in the Tattnall family until 1846, when Captain Peter Wiltberger became the new owner. The sale excluded the Tattnall family cemetery, but Wiltberger agreed to maintain it. Wiltberger died shortly after purchasing Bonaventure and was buried at the estate beside his wife, Susan, and their son, Rutherford. Another son, Major William Henry Wiltberger, inherited the property. After fighting in the Civil War, in which he attained the rank of Major, he fulfilled his father's desire to turn part of Bonaventure into a public cemetery by forming Evergreen Cemetery Company on June 12, 1868. Bonaventure came under the control of said company. Major Wiltberger died in 1872 and was buried next to his family in section B, lot 3 of the cemetery he helped create. After the death of William, all titles to Bonaventure and the cemetery tracts were transferred to the Evergreen Cemetery Company by the executors of his estate. The Evergreen Cemetery of Bonaventure was bought by the city of Savannah on July 7, 1907, for $30,000. Greenwich Cemetery became an addition to Bonaventure in 1933.
