Franklen (actually most likely Franken given where the Tammens were from) could have been Elka’s maiden name, middle name, or married name with a previous husband.
I should include in my notes on Elka that she is referred to as “Elka B. Franklen Tammen” in her husband’s 1895 will. I should not enter that as her maiden name.
Using it for a clue to other relatives when searching is advised. But there’s not really good evidence in this will that it’s her maiden name. There are other possibilities.