hiː wʌzɐ səpˈoːɹɾɚɹ ʌvðə klˈoʊsɚ pˈoʊlɪʃ lˌɪθjuːˈeɪniən jˈuːniən, ænd ɐ stɹˈɔŋ ˈædvəkˌeɪt ʌvðə jˈuːniən ʌv lˈʌblɪn wˌɪtʃ tɹænsfˈɔːɹmd ðə pɹˈiːviəs pˈɜːsənəl jˈuːniən bᵻtwˌiːn kˈɪŋdəm ʌv pˈoʊlənd ænd ðə ɡɹˈænd dˈʌtʃi ʌv lˌɪθjuːˈeɪniə ˌɪntʊ ðə nˈuː kˈʌntɹi ʌv pˈoʊlɪʃ lˌɪθjuːˈeɪniən kˈɑːmənwˌɛlθ.
He was a supporter of the closer Polish–Lithuanian union, and a strong advocate of the Union of Lublin which transformed the previous personal union between Kingdom of Poland and the Grand Duchy of Lithuania into the new country of Polish–Lithuanian Commonwealth.