Thank you so much. Everything helps! Suggestions, links, etc. I do appreciate your time in helping.
The suggestion of 'Zell am Ziller' does make sense.
As for the Krell name, my grandmother only told me that her mother (Elizabeth Krell) was from the Tirol mountains but never gave me a specific location.
I'm off to look at all the links you posted...again, thank you, thank you, thank you.