1  Geographer Jacob Gronow (20 Oct 1645 Deventer – 21 Oct 1716 Leyden, Holland)   +  (Name Unknown)      2  MD/Botanist Johann Friedrich Gronow (1690 – 1760)         +  (Name Unknown)            3  Lorenz Theodor Gronow (1730 – 1777 Leyden, Holland)      2  Abraham Gronow