Sōma Morotsune was the younger son of Chiba Tsunetane, and with his father was a samurai in the service of Minamoto no Yoritomo.
sˈoʊmə mˈɔːɹətsjˌuːn wʌzðə jˈʌŋɡɚ sˈʌn ʌv tʃˈiːbə tsˈuːnɪtˌeɪn, ænd wɪð hɪz fˈɑːðɚ wʌzɐ sˈæmjʊɹɹˌaɪ ɪnðə sˈɜːvɪs ʌv mˌɪnɐmˈoʊɾoʊ nˈoʊ jˌoːɹɪtˈoʊmoʊ.