Japan's seclusion came to an end in 1854 and in 1859 Nagasaki was opened as a treaty port and the Dutch abandoned Dejima for a consulate in the capital city Edo (modern Tokyo). Siebold received a pardon and returned to Nagasaki[12] 4 August[lower-alpha 9] that year with his 13-year-old son Alexander,[9] from his German marriage.