Newcomb-Starr & Dommerich Genealogy

I have just begun reading a new book I bought - in a disappointing digital version - of Our Colonial and Continental Ancestors; the Ancestry of Mr. and Mrs. Louis William Dommerich originally published in 1930. In it, an small section is dedicated to Andrew Newcomb, my good friend's ancestor.... where might the Dommerichs fit in that tree, and where might my great, great grandfather Louis Ferdinand be?