Have any of you ever heard of the name (or a place named) von Schlieren?
in reasearching my family history, I have found a marriage record for my Great-Great Grandparents, showing the marriage of Daniel Romann and "Elizabeth Frei (abbreviation for freiherren?) von Schlieren", who was supposedly either northern Swiss or Bavarian (my family is Swiss). One of their sons (there were at least three who emigrated to the US and ended up in the same area) is, of course, my Great Grandfather, who emigrated to the US in the late 1860s and married into an established German-American family and started the brood that became my family.

But we can find noone else, either in later period records or in modern name searches, with the name von Schlieren. The only things or places I can find named Schlieren are the photography process (which is named for the way the pics look, not an inventor) and a place northwest of Zurich (which is, incidentally, where they lived before they emigrated) named Schlieren. But I can't find any history or info on the place online to research.
Can anyone help?