ˈæftɚ ɹᵻtˈɜːnɪŋ tə dʒˈɜːməni, wˌɛɹ hiː mˌeɪd wˈʌn ʌv ˈoʊnli tˈuː vˈɪzɪts ʌv hɪz kɚɹˈɪɹ tə mˈeɪnts, hiː mˈiːdɪˌeɪɾᵻd bᵻtwˌiːn fɹˈɛdɚɹˌɪk ænd ðə sˈæksən dˈuːk hˈɛnɹi ðə lˈaɪən.
After returning to Germany, where he made one of only two visits of his career to Mainz, he mediated between Frederick and the Saxon duke Henry the Lion.