I found this information fascinating! In my research I was able to get this far, but only to the fact that I knew a family came here in the 1840's sailing out of Hanover. I always wondered where they landed, and now I know! Amazing. I wonder if there is a website for the Port of New Orleans that would give any historial info?
I am the grand-daughter of Norbert, who was the son of Joseph Henry. Norbert died in 1983. My father is Gerald (Jerry) Norbert Holdgrafer. Near as I can tell, we are the only Holdgrafer's in the Northwest - my dad, mom and brother are in Oregon, and I live in Seattle. Are you in Iowa? Seems that most Holdgrafer's are there or in Minnesota. firstname.lastname@example.org