Hi, Pronuciation of names can be a bit idiosyncratic. It's best to ask the person, if it's important and if you are not sure. eg Hello, Mr. Ween-er. I hope I am pronouncing your name correctly?
I knew a family with the name 'Reichwein'. In German, of course, both would be pronounced with the vowel as in 'fine'. When asked how they pronounced it, they always answered, "Just like it looks: rich wine".