One of the almost-forgotten men in the founding of Tombstone was Dick Gird. He was a respected assayer at a mine north of the area, and Gird first checked some of the ore provided by the Schieffelin brothers for silver content.
The three went back to the San Pedro region and found even more at what became their Contention Mine. And on April 5, 1878, they filed the paperwork for the Tombstone Mining District. A year later, the town of Tombstone was laid out. Gird ended up a millionaire.