Kim, My mother was a Keller and two generations of Kellers lived in Ramsey Co., MN.The two generations before that resided in New Trier, Dakota Co., MN.I have quite a bit of information on my line of Kellers.
Lauretius Keller came from Leimersheim, Rheinland-Pfalz, Bavaria, Germany 10 Apr 1852 on the Ship Trenton. They lived in Illinois for a few years and then moved to New Trier, Dakota Co., MN where he and his wife Marie Theresia (Loesch) lived until there death.
They had the following children: Adam Keller b. 30 Jul 1847 in Germany d. 17 Mar 1848 in Germany Adam Keller b. 6 Jan 1848 in Germany Barbara Keller b. 30 Apr 1853 in IL Caroline Keller b. 12 Jan 1856 in IL Anna Maria Keller b. 16 Apr 1858 in MN Maria Barbara Keller b. 29 Oct 1859 in MN Frank Keller (my great grandfather) b. 24 Apr 1862 in MN (Frank moved on to Ramsey Co., MN where he died in 1910, Frank and his wife Louisa Catharine (Arlt) had 8 children) Katherine Keller b. 5 Apr 1864 in MN Phillip Keller b. 16 May 1868 in MN (Phillip stayed on the old homestead until his death in 1854) I have visited New Trier and found most of the baptisms for the children also in Ramsey County where more of them were baptized.
Anyone needing information on this Keller line I would be more than willing to share the documentation and information I have accumulated.