 He begs McGillivray's assistance in recovering his horses that were purportedly stolen by Creeks and asks if McGillivray will allow several hundred families to settle in the Tombigbee area.The letter was intercepted, and when the letter was discovered, the North Carolina General Assembly launched an investigation into Martin's conduct.He was later exonerated when it turned out that he was acting as a spy on Patrick Henry's instructions to ferret out the nature of McGillivray's ties to the Spanish, who were then active in Spanish Florida.