Janice - wow, thank you! I never expected to find a baptism record, and it seems I never would have because Nenno is not a place I would have thought of.
It is interesting because I was always under the impression that Martin's father was John or Peter (although I forget why).
Also, he had a brother (either Frank Joseph or Joseph Frank) and a sister Barbara who married a Smith and moved to Maywood, Illinois.
Assuming there are not 2 Martins born on the same day in that county, you've really made my whole year (so far...).