He married twice: in 1920 to Martha Schmellinsky and from 1953 until his death to Lotte Ulbricht née Kühn (1903–2002).
Pri brak sklopio je 1920. godine s Marthom Schmellinsky, a od 1953. godine pa do svoje smrti bio je u braku s Lotte Ulbricht (1903. - 2002.).