Lucy Kibaki
Alikutana na Mwai Kibaki mwaka wa 1960, na walifunga ndoa mwaka wa 1962. Wanandoa wana watoto wanne: Judy Wanjiku, Jimmy Kibaki, David Kagai, na Tony Githinji. Bi. Kibaki ni mlezi wa Shirika la Chama cha Viongozi Wasichana.
Joseph Narcis Mloka
Watoto wake ni Antonia Joseph Mloka (1954 – 1999), Charles Joseph Mloka, Blandina Joseph Mloka (1960 – 2000), Peter Joseph Mloka, Daniel Joseph Mloka, Michael Joseph Mloka na Gerald Joseph Mloka.