My paternal grandmother was a Yordy from Ohio. I was able to trace back a few generations to a Catharine Yourdy (b 1819?) in the 1870 census for Miami twp, Montgomery County, OH, living alone with her three children.
In the 1880 census, she appears as Cathern Yortee. This time living with her son Fredrick's family (my gg grandfather).
On Fredrick's OH death cert, it lists his parents as Christian Yordy and Katherine Hoffecker. That is the only mention of his father I have found. However I am unable to find anything else about them.
Interestingly, there is a Joseph Yordy and family also living in the Miami twp about the same age and had the same last name spelling variants. Maybe a brother to Christian?
Brian