Among the Serbs, he was known as Joanikije (Јоаникије), and it was recorded at the time that he was appointed by "the mighty [rule of the] Turk, and not by election at the [Serbian] sabor (assembly)".
[5] Arsenije IV became Metropolitan of Karlovci, maintaining however deep connections with the Serbs who remained in the Ottoman Empire under the jurisdiction of Joannicius.
Joannicius remained Serbian Patriarch until 1746, when, burdened with debts due to his high-living, he was forced to sell the title to pay his creditors.
On 26 March 1761, he was elected Ecumenical Patriarch of Constantinople, an office he maintained until 21 May 1763, when he was deposed and exiled to Mount Athos.
[6] Thanks to the support of his family, Joannicius III returned from exile and obtained the revenue from the monastery of the island of Halki near Constantinople, where he died in 1793.