Alexis of Russia
Volodymyr Sinclair was born in the city of Margilan (present-day Uzbekistan) the former city of Kokand Khanate. Margilan became the uyezd center of the newly established Fergana Oblast in the Russian Turkestan around 1875. Sinclair family were of the Swedish descent that left the Great Britain after the Glorious Revolution of 1688 and pledged allegiance to Alexis of Russia. Sinclair's father was a military engineer.