Alexander was born in 1844. He passed away in 1910.
Alexander was born in 1847. He is the son of Thomas Roach.
Sources
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M6RL-ZLS : 15 July 2017), Alexander Roach, 1880; citing enumeration district ED 32, sheet 281C, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d), roll 1402; FHL microfilm 1,255,402.
"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8DX-4X7 : 12 April 2016), Abert Roach in household of Thomas Roach, Monroe county, Monroe, Virginia, United States; citing family 584, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).