ˈæftɚ ðə dˈɛθ ʌv ɹˈɪtʃɚd ɹˌoʊmən tˈuː ˈɛɹ ɪn wˈʌn θˈaʊzənd wˈʌnhˈʌndɹɪd θˈɜːtiːn, dʒˈɑːnəθən wʌz ɪnstˈɔːld æz dˈuːk, wɪð ɹˈɪtʃɚd æz ɹˈiːdʒənt, baɪ pɹˈɪns ɹˈɑːbɚt aɪ ʌv kˈæpjuːə.
After the death of Richard II's heir in 1113, Jonathan was installed as duke, with Richard as regent, by Prince Robert I of Capua.