Thank you, Ruth! I did find references on the internet to another Susanna Dewsnap, widow of George, who was living in Middletown, NY. I speculated that this might be Susanna's mother, and your information seems to confirm that. I have two photos of Susanna's grave, one taken in the 1880s and the other taken this past April. Susanna is mentionned briefly in various missionary letters. Her ministry was that of training Gabonese Pastors, which was remarkable in the 1880s. She was last stationed at Kangwe, which was a fairly new station at the time. She died of fever and her body was transported back to Libreville for burial. I also found an interesting excerpt from the writings of Trader Horn (his real name was Aloysius). He mentions a kind, elegant single missionary lady living in Kangwe, who died of fever and was buried at Baraka mission in Libreville. In the book, he called her "Miss Haskins" and said she was from Cincinnati. His description parallels very closely details of Susanna Dewsnap.