Did you check the passenger lists of the ships from Hamburg. I am just getting started in looking but have found the passenger lists very helpful. The name Kaehler could have several variations. I am looking for Kaetler's (mennonites) and in particular for Jacob Kaetler who's son is Henry Kaetler (born in 1848) and came to Canada in 1875 - 76. He is my great X 3 Grandfather.