Niko I Dadiani studied in Paris, and upon return to Georgia on January 4, 1867, he renounced his title as Prince Regent.
On his return, Niko, persuaded to accept a fait accompli, renounced his hereditary title of Prince Regnant of Mingrelia on 4 January 1867. Niko remained in St. Petersburg, enjoying the favor of the imperial family even after his mother hurried home due to a peasant revolt in Mingrelia in May 1857. Dadiani mostly lived in Saint Petersburg, being close to the court. 
