ðeɪ hæd θɹˈiː sˈʌnz, hˌuː ˈiːtʃ bɪkˌeɪm pɹəfˈɛsɚz: ˈælən kˈiːθlˈuːkəz, dˈeɪvɪd kˈiːθlˈuːkəz ænd bɹˈaɪən kˈiːθlˈuːkəz.
They had three sons, who each became professors: Alan Keith-Lucas, David Keith-Lucas and Bryan Keith-Lucas.