The only McHenry I am familar with is McHenry Metals. Founded by Gary Adams after he sold TaylorMade and Founders Club. Gary died shortly after founding of McHenry Metals and I think they went under shortly thereafter, They made Tour Pure woods and Strike Tri-Bounce Wedges. I have a set of wedges(52,56 and 60) and they are tremendous! Check out eBay for their product( GolfSpy wouldn't let me share link).
Gary was from McHenry, Il (TaylorMade was there until they moved to San Diego) and thus the name McHenry Metals.