Nathan Jacobson was one of the leading algebraists in the last century. Several mathematical objects are named after him such as the Jacobson radical. See https://en.wikipedia.org/wiki/Nathan_Jacobson .
I wonder what is the right pronunciation of his name. Most often his name is pronunced as an american name but it sounds like a German name. I am asking this because two people at (different) conferences told me to pronounce his name in the right way. One said the american way is right and the other said that it is a German name. I do not know what is right, but I heard that his students used his american name.