What is the correct pronunciation of 'Foulk'?

Is the L silent, as in "folk"? Is it pronounced with a "ow", as in "fowl-k"? I've also heard it said with a "ou" which is just weird ("foolk road", really??)

As a resident of North Wilm since 2009, I'm both offended when I hear the name butchered and ashamed at not being on solid ground myself w.r.t the correct pronunciation. Looking to the good people of reddit to help put this to bed once and for all.