Pam,my great-grandmother was Garret's daughter, Emma. The name Tingen is quite common in the Province of Drenthe in the Netherlands. It can also be found in other parts of that country. This is the only place I have seen the name. Someone researching a Dutch family had pointed me in that direction. He said that the name Garret would have been Gerit or Grite in Dutch. The only other family I have found in this country with the name seems to have possible Dutch names.