hiː wʌzɐ jˈʌŋɡɚ bɹˈʌðɚɹ ʌv fɹˈɛdɚɹˌɪk kɹˈɪstʃən ɹˌoʊmən tˈuː, dˈuːk ʌv ˈɔːɡəstˌɛnboːɹɡ, bɹˈʌðɚɹɪnlˈɔː ʌv pɹˈɪnsɛs luːwˈiːz ˈɔːɡʌst ʌv dˈɛnmɑːɹk ænd ɐn ˈʌŋkəl ʌv kˈæɹəlˌaɪn ɐmˈeɪli ʌv ˈɔːɡəsʔˌn̩bɜːɡ, kwˈiːn kˈɑːnsɔːɹt ʌv dˈɛnmɑːɹk ænd kɹˈɪstʃən ˈɔːɡəst, dˈuːk ʌv ˈɔːɡəstˌɛnboːɹɡ.
He was a younger brother of Frederik Christian II, Duke of Augustenborg, brother-in-law of Princess Louise Auguste of Denmark and an uncle of Caroline Amalie of Augustenburg, Queen consort of Denmark and Christian August, Duke of Augustenborg.