[2] He agreed to be vicar of the Metropolitanate from February 1829 to 22 August 1833, while Gregory IV was exiled in Russia and also after his death on 22 June between 1834 and 1840.

[4] During the Wallachian Revolution of 1848 (July–September 1848), he was invited by the Revolutionary Committee to become Chairman of the Provisional Government, which he accepted on 12 July.

He eventually turned against the Provisional Government, but his coup d'état failed and he was replaced on 9 August 1848, by a radical triumvirate consisting of Ion Heliade Rădulescu, Nicolae Golescu and Christian Tell.

After the suppression of the Revolution he requested (as Metropolitan) the restoration of order and contributed to the capture of clerics who had engaged in revolutionary actions, which led to him being considered a controversial figure from 1848.

As a metropolitan, he set up four theological seminaries in Wallachia and supported sending young people to scholarships in Greece and Russia.