Here is family line:
Wilhem Seefeldt 1819 - wife Wilhelmine - his sister Carol, his brother Johann Gottlieb 1826.
Wilhem had 3 kids: Carl 1842, Wilhelm 1845, Ernstine Fredricka 1855(she married John Schmidt about 1874 in Milwaukee, WI)
John Schmidt and Ernstine Fredricka Seefeldt had 4 kids: William T., Edward, Sam, and Rosa.
Most of this Seefeldt family was buried in Forest Home Cemetery in Milwaukee, WI.