Hi, I have a Johannes Smits on my tree, born in Rotterdam in 1869. He was the son of Hendrik Jacobus Smits (born 1822) and Johanna Stortenbeeker (born 1833). Johannes Smits had a sister, Johanna (born 1864), who is my great-grandmother. I cannot confirm a link to your family. Do you have more information? Thanks, Bill Goldmann