Parents: Benjamin Grymes and Sarah (Judy) Robinson
Philip Grymes migrated to New Orleans, after completing his studies at William and Mary. President Thomas Jefferson appointed him in February 1808 to be the second United States Attorney for the Louisiana Territory. In 1809, Jefferson also appointed him to serve as register of the land office for the eastern district of Louisiana.
His brother John Randolph Grymes arrived in 1808 to assist him. When Philip resigned as US attorney in 1810, his brother replaced him. Philip stayed in the territory until at least 1813, then returned to Virginia1