tʃˈɑːɹlz ɹˌoʊmən θˈɜːtiːn wʌz tʃˈaɪldləs, sˌoʊ ɪn ˈɔːɹdɚ tə sᵻkjˈʊɹ ðə səksˈɛʃən tə ðə θɹˈoʊn, sˈʌmwʌn hædtə biː ɐdˈɑːptᵻd æz hɪz ˈɛɹ.
Charles XIII was childless, so in order to secure the succession to the throne, someone had to be adopted as his heir.