Y-DNA of the Curtius family & variants:
e.g. Curtze, Korte, Kurtz, Kurtze, Kurz, Van Someren, Van Zomeren etc. families.
Never Y-DNA tested!
Then take your test with Family Tree DNA (FTDNA)
If you have never been Y-DNA tested, then get a male Y-DNA test with Family Tree DNA (FTDNA). The surname group project used by this Curtius / Kur(t)z(e) website is The "Kur(t)z(e)" Group Project hosted by FTDNA; you can join this project and place your Y-DNA order from within the project web page to get your Y-DNA test results automatically uploaded within this project - this is recommended and the cost of the test is reduced. FTDNA host your own personal page but use their webpage called "Kur(t)z(e)" to display the Kur(t)z(e) Y-DNA spreadsheet of test results for all the Kur(t)z(e) Group Project members, so you compare your test data with others.