I have run into what seems an insurmountable block in finding a link from John Rickert (Rickett)to his parentage. He married Aurilla Inman in McDonough County, Ill. in 1867 and moved to Iowa. Our family name is Rickert but his marriage certificate had the name of John Rickett. He was born in Md and his parents according to census records were born in Baden-Baden, Germany. Need help!