Susannah was born in 1816. She passed away in 1874.
Sources
"United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MHJY-51J : 19 December 2020), Susannah T Poe in household of Wm Poe, Clay Township, Morgan, Indiana, United States; citing family , NARA microfilm publication (Washington, D.C.: National Archives and Records Administration, n.d.).
"Indiana Marriages, 1811-2007," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QV99-QF29 : 10 December 2017), William Poe and Susannah Bray, 22 Feb 1838; citing Morgan, Indiana, United States, Marriage Registration, Indiana Commission on Public Records, Indianapolis; FHL microfilm 007578353.
"Find A Grave Index," database, FamilySearch (https://www.findagrave.com/memorial/69002427/susanah-d-poe), Susanah D Poe, 1874; Find a Grave, database and images (https://www.findagrave.com : accessed 29 March 2021), memorial page for Susanah D Bray Poe (11 Nov 1816–2 Aug 1874), Find a Grave Memorial no. 69002427, citing West Union Cemetery, Monrovia, Morgan County, Indiana, USA ; Maintained by KEW (contributor 46998261) .