Hi Mike,
My name is Andrea Ikenberry, and Wilbur Allen Ikenberry is my ggfather too. My grandfather is Edward Ikenberry, your grandmother Maurine's brother.
I know that all the Ikenberry children eventually moved to California after their mother's death, when Wilbur was able to come too. Edward stayed for some time with Wilbur's mom prior to the move.
I would love to discuss this more with you and hear what you found out about the Maxwell line.
I actually fouund another variation of Ikenberry to spelled Eichenbeere - translated as fruit of the oak.