John Hagee is the founder of John Hagee Ministries. Hagee jumped on the four blood moons bandwagon in 2012 and 2013 with a book, DVD and even a T-shirt on it.
John Hagee and the Four Blood Moons Theory
John Hagee is a popular Bible teacher based in San Antonio, Texas and Senior Pastor of Cornerstone Church. He also has a regular TV broadcast on which in 2012 he covered the four blood moon theory of Mark Biltz.
He released a DVD of that called the Coming Four Blood Moons. In 2013 he released a book called Four Blood Moons: Something Is About to Change.
Personally, I was surprised to see such a mainstream megachurch pastor like John Hagee cover this speculative fringe tetrad theory. See my article analyzing the four blood moon theory to find out why.