An haifi mahaifinta a Scotland a 1819, an bayyana shi a cikin takardu daban-daban a matsayin lauya, banki, ma'aikacin giya ko ma'aikacin shari'a; ya auri Souter a cikin Inner Hebrides a ranar 14 ga Yuli, 1842. An kira Catherine bayan kakarta, kuma Catherine Wilson Malcolm, amma ya fi son rubuta sunanta "Katherine" ko kuma ta rage shi zuwa "Kate". Tana da 'yar'uwa tsohuwar Marie, haifaffen Scotland, da 'yan uwanta uku <unk>, haifaffen Birmingham, da Isabella da duka biyu, haifaffen London; a bayyane yake iyalin sun koma London a lokacin.
Catherine Wilson Malcom