Original sentence: Born in Constantinople (Istanbul) as the eldest son of Constantine Ypsilanti, Alexander accompanied his father in 1805 to Saint Petersburg, the capital of Imperial Russia, and in 1809 received a commission in the cavalry of the Imperial Guard
Edited sentence: Born in Constantinople as the eldest son of Constantine Ypsilanti, Alexander accompanied his father in 1805 to Saint Petersburg, the capital of Imperial Russia, and in 1809 received a commission in the cavalry of the Imperial Guard