See also

• Dermont MERCER's parents: William T. MERCER (1812-1886) and Gertrude Ann FRELINGHUYSEN (1814-1886)
• Dermont MERCER's siblings: Charlotte F. MERCER (1836-1895), Gertrude Elizabeth MERCER (1838- ), Frederick F. MERCER (1840-1913), Theodore F. MERCER (1843- ), William MERCER (1845- ) and Archibald MERCER (1847- )