Thank you for your email.
I do not know if the person you named is related. I only know of the marriage in Germany of Heinrich Conrad Krumwiede and Ilsa Maria Schulte in 1797 in Lutter. I have not found records of their kids yet.I know that many with the last name of Krumwiede left that area of Germany for America in the mid 1800s.
All of this is only complicated by the fact that my great-uncle is Heinrich Conrad Krumwiede, b. 27 July 1830 in Klein Varlingen. Which leads to the possibility that ONE of your Heinrich Conrad's children might have been my great-great grandfather Johann "Jurgen" Heinrich Krumwiede, whose date of birth I do not have. My great-great grandmother, Catherine "Marie" Buchholz, however, was born 27 March 1805 in Hanover, was widowed after 22 years of marriage and came to America and remarried.