In addition to serving as a key advisor to his father, President Martin Van Buren, he was also Attorney General of New York from 1845 to 1847.
ɪn ɐdˈɪʃən tə sˈɜːvɪŋ æz ɐ kˈiː ɐdvˈaɪzɚ tə hɪz fˈɑːðɚ, pɹˈɛzɪdənt mˈɑːɹtɪn vˈæn bjˈʊɹɹən, hiː wʌz ˈɔːlsoʊ ɐtˈɜːni dʒˈɛnɚɹəl ʌv nˈuː jˈɔːɹk fɹʌm wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd fˈoːɹɾi fˈaɪv tə wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd fˈoːɹɾi sˈɛvən.