Louisa was born in 1839. She is the daughter of Elisha Jacobs.
Sources
"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8DK-DGQ : 12 April 2016), Louisa M Jacobs in household of Elisha A Jacobs, Pocahontas county, part of, Pocahontas, Virginia, United States; citing family 246, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).