Its been a while but I was wondering if you found out more about the KRULLs. I have just started searching on that side of the family and Edward Henry KRULL appears to be my great-great grandfather (Edward Henry>William John>Thomas Edward-my grandfather).
I have not been able to find out much about the Krulls, though family legend is that our great-great grandfather met great-great grandmother on the boat from Germany to the USA. She was a windower with a young son. I haven't been able to confirm if this is true or not.