The three men the proceeded in 1814 in Odessa to the founding of Filiki Eteria, a secret organisation to prepare the ground for Greek independence.
Ypsilantis was the brother of Alexander Ypsilantis, a leader of Filiki Eteria.
He then travelled to Constantinople to commission a new ship and there he was recruited to the Filiki Eteria by Papaflessas.
Married to a princess Ypsilantis, Konstantin actively supported the Greek secret society Filiki Eteria and the military action of Alexander Ypsilantis in Moldavia and Wallachia.