Tuhia he tohutoro mō tēnei wāhanga - I mahi ia hei nuncio ki Switzerland. I te tau 1790, ko te ataahua me te korero a della Genga i aro nui mai i tetahi korero whakamaharatanga mo te Emepara o mua a Joseph II. I te tau 1794 i whakaingoatia ia e Pope Pius VI hei kaihautū o te Basilica o Saint Peter, a i te tau 1793 i whakaingoatia ia hei Titular Archbishop of Tyre. I whakatapua ia i Roma i te tau 1794 whai muri i te whakatuu, ka tukuna ki Lucerne hei Nuncio Apostolic. I te tau 1794 i whakawhitihia ia ki te nunciature i Cologne, engari na te pakanga
I noho ia ki Augsburg. I tenei wa, i whakapono ia koinei tana pou whakamutunga ka whakarite i te hanganga o nga urupa mo tona whaea me ia ano.