There were many early flight pioneers, but the Wright's documented their flight and quickly developed controlled powered flight. Whitehead may or may not have flown before the Wright brothers, but one photo, now apparently lost, and no other good documentation of the feat doesn't give him much credibility.
I thought you can't patent an idea, that the patent goes to the first WORKING prototype.
The Wrights did a lot more than be the first. It took a number of years to convince the world they could do what they had actually done. Convincing a skeptical world was in many ways one of the most amazing stories in history. First in America then in Europe. Even if they weren’t the first they blazed the trail for aviation and essentially laid the foundation. There is no disputing that part.