Faust-Slingerland Famlies, New York, NY

I am searching for any connections with the following key individuals. The Slingerland side I have traced back to the 1600s in The Netherlands, but I am missing much information. The Faust side is much more difficult, not getting beyond names of my paternal great-grandparents. Also, I am having trouble finding family information on Charles L. Hartmann (my maternal great-grandfather) and Magnus Wengberg (my maternal grandfather.)

Francis Faust, b. ? and wife, Johanna Chmelik, b. ?
Francis Frank Faust, b. 1886, NY City & wife, Marie Vesela (or Vesselle), b. 1890, Bludov, Czechloslovia (now The Czech Republic).

Jan Slingerland, b. 1821, Haarlem, The Netherlands (Holland) & wife, Anna Maria Petronella Ziegler, b. 1189, Leiden, The Netherlands.

Charles L. Hartmann, b. 1862, Schleswig-Holstein, Germany & wife, Johanna Wilhelmina Frederika Slingerland, b. 1867, Haarlem, The Netherlands.

Magnus Wengberg, b. abt 1888 & wife, Charlotte Johanna Hartmann (nee Slingerland), b. 1889, Brooklyn, NY.

Please contact me at the email address listed. (Name, Address, etc. omitted for obvious security reasons).

GEDCOM Trees (viewing trees requires 4.0 or later)

• Slingerland Family Tree of New York, NY GEDCOM (56 KB)
  Decendants of Willem Slingerland, b. 1674, The Netherlands
• Faust Family GEDCOM (73 KB)
  Faust Family of New York, NY, from Francis Faust