First, there is no such surname in Germany as "Kemano".If that actually is this family's name as found in America, then that means, as was often the case was immigrants, that the name underwent a change after the family went to America.
The only surname in Germany that really resembles "Kemano" at all is KÄMENA or the alternate spelling KAEMENA.
They also of course americanized their first names.In the original German, the husband would have been FRIEDRICH WILHELM, his wife FRIEDERIKE, their children WILHELM, MINNA, and AUGUST.
You also have to be aware that just like the U.S., Germany, too, has always been made up of STATES.This family was from what was at that time the north-central German state of HANOVER (in German: Hannover).Hanover covered an area about the same as that covered by the U.S. states of Maryland and Delaware combined.You won't be able to proceed until you do further research in the U.S. and find out which city, town, or village in Hanover this family was from.
You left out a couple pieces of important information, without which it would be rather difficult for anybody here to assist you:
Approximately when was each of these people born?
You say they came "to America" between 1852 and 1856.Well, America is a vast country!Just where exactly in America did this family settle?
And something always of the most vital importance in German genealogy: What was this family religious denomination?
And just one more thing:Your query is really too broad, too vague.I know from years of experience that people who post queries asking for "any information" very seldom get replies.So could you be more specific as to just what it is that you want to find out about this family?