I've received your email & replied.
I do think that your second cousin is the John aka Jack I've been looking at in connection with my DeBow line. I do hope if you're in touch, he'll be willling & able to fill-in some blanks.
Since I answered your email, it's occurred to me that if he is the Eiermann married to Lambert, he might only know of his wife's grandmother Grace DeBow as "Grace Deboer" which is how Grace's maiden name appeared in the obit of her son/John's father-in-law Howard ALbert Lambert.