How to pronounce the name Walter Weyl

I could not initially find the answer to this problem. Walter Weyl had a son though, who was rather well known in his day having testified against Alger Hiss. Here is where we learn the pronunciation:

.....that earned Mr. Weyl a measure of notoriety. Mr. Weyl (pronounced "while") had been active....

It may seem like a waste of time to most others, but I find this important to know as I try to put together as many facts as I can from high to low. Walter While.