3. Johannes Hendrikus Hermannus Josephus Elfers is geboren op 29 jun 1840 in Vriezenveen, Vriezenveen; is gestorven op 23 jun 1916 in Jefferson Township, Montgomery County, OH, USA; is begraven in Dayton National Cemetery, Dayton, OH, USA.
Johannes Hendrikus Hermannus Josephus Elfers (2.Maria2, 1.Joanna1) is geboren op 29 jun 1840 in Vriezenveen, Vriezenveen; is gestorven op 23 jun 1916 in Jefferson Township, Montgomery County, OH, USA; is begraven in Dayton National Cemetery, Dayton, OH, USA.