Liberty County, Georgia, United States Click to see full answer Similarly, it is asked, when did Mary Musgrove die? 1765 Similarly, how did Musgrove die? About John Musgrove, Jr., Indian Trader was born in South Carolina around 1695 and died at “Cowpen Plantation,” north of Savannah, Georgia on 12 June 1735, of a fever (probably malaria). Also, who did Mary Musgrove translate for? She married John Musgrove in 1717 and quickly established a trading post. She attracted the attention of General James Oglethorpe and served as his main interpreter from 1733 to 1743. Musgrove married three times, all the while increasing her business acumen and sharpening her diplomatic skills.How did Mary Musgrove help establish Savannah?Businesswoman and Diplomat. In 1717 she married English trader John Musgrove, and together they set up a trading post near the Savannah River. As interpreter for Oglethorpe and Yamacraw Indian chief Tomochichi, Musgrove was instrumental in the peaceful founding of Savannah, and by extension, the Georgia colony.