Carol: My grandfather was John
Barkema from Ulrum,Groningen, Netherlands.born abt 1857,d.1933-Holland, MI.Married Antje
Vanderploeg,b.1857,d.1957.They had ten children: Matje, or Martje, died as a child, John, Jacob, Katherine,Elizabeth,Corneilius-d. 1918 WW1, Henry, Frank, Martha, Anne.The names on your list may be the same, but timelines don't match. Could they still be connected somehow? Hope this does not add to any confusion. I have not been able to find parents of either John
Barkema, or Antje
Vanderploeg., Sincerely Charles
Barkema