Hasekura Tsunenaga was a Japanesesamurai and retainer of Date Masamune, the daimyo of Sendai. In the years 1613 through 1620, Hasekura headed a diplomatic mission to the Vatican in Rome, traveling through New Spain and visiting various ports-of-call in Europe. This historic mission is called the Keichō Embassy. On the return trip, Hasekura and his companions re-traced their route across Mexico in 1619, sailing from Acapulco for Manilla, and then sailing north to Japan in 1620. This is conventionally considered the first Japanese ambassador in the Americas and in Europe. Although Hasekura's embassy was cordially received in Europe, it happened at a time when Japan was moving toward the suppression of Christianity. European monarchs such as the King of Spain thus refused the trade agreements Hasekura had been seeking. Hasekura returned to Japan in 1620 and died of illness a year later, his embassy seemingly ending with few results in an increasingly isolationist Japan.