Carl Johan Adlercreutz was a Swedish (Finnish) general and statesman, born in Borgå, Finland on family estates. Entering the Swedish army aged 13 in the Finnish Light Cavalry Brigade, he was present when Gustav III launched his coup-d’etat. He studied military theory in Stockholm.

Porvoo is a city in Finland. It is located on the south coast of the country, on the Gulf of Finland. Porvoo lies in the eastern part of the Uusimaa region. The population of Porvoo is approximately 51,000, while the sub-region has a population of approximately 59,000. It is the 19th most populous municipality in Finland, and the 15th most populous urban area in the country.