I have some Lange families, Rosebud, Falls Co, TX --
Wilhelm Friedrick Lange, b, 1865 Germany, wife Anna, 10 children, Herman, Louise, Ella, Bertha, Otto Philip, William, Albert, Annie, Minnie and Ottilie. I don't have any Allin/Allen/Walker families connected to these Langes (that I'm aware of).

Wilhelm and Anna are (reportedly) buried at Salem Lutheran Cem, Rosebud, Falls Co. I think some of their children lived their adult lives at Rosebud, too, also Bell and Milam Co., TX.

I'll be happy to share what I have, if any of these names ring a bell.