Hermann was a guarantor in the peace of Constance in 1183, in which the cities of Lombardy became independent.
hˈɜːmən wʌzɐ ɡˈæɹɐntˌoːɹ ɪnðə pˈiːs ʌv kˈɑːnstəns ɪn wˈʌn θˈaʊzənd wˈʌnhˈʌndɹɪd ˈeɪɾi θɹˈiː, ɪnwˌɪtʃ ðə sˈɪɾiz ʌv lˈɑːmbɚdi bɪkˌeɪm ˌɪndᵻpˈɛndənt.