Abraham and his wife Lea were baptised in 1822, and formally adopted the surname Mendelssohn Bartholdy (which they had used since 1812) for themselves and for their children.
Abraham og hans hustru blev døbt i 1822, hvorved de formelt antog efternavnet Mendelssohn Bartholdy (som de havde benyttet siden 1812), hvilket deres børn også kom til at hedde.