Cannabis pollen was found on the mummy of Ramesses II, who died in 1213 BCE. Seven pollen grains of cannabis were retrieved from the Pharaoh's mummy, and pollen of cotton was found in the same ancient context. The paleobotanists who retrieved these crops suggested that they may not have been native species and were rather introduced.
Source: Clarke, R., & Merlin, M. (2013). Cannabis: evolution and ethnobotany. Univ of California Press.