My grandmothers maiden name was Nicklaus. There are two lots full of Nicklaus family members in Evergreen cemetery in Brooklyn N.Y. I have seen the name spelled Nicklaus, Nicklous, Nicholaus, As well as other ways. I have some Genealogical research completed. A cousin supposedly moved to the middle west from Brooklyn in the 1800's and that is,of course ,Jack's family.Any connections?