Johan Albrecht Ehrenström (28 August 1762 – 15 April 1847) was a notable Finnish Senator, Active Privy Councillor, and Chairman of the Reconstruction Committee of Helsinki.

[1] Ehrenström joined the artillery at age ten, became a Sergeant at fourteen, and a Conductor of the Finnish fortress troops at seventeen.

[1] After Gustav III was assassinated by nobleman Jacob Johan Anckarström in 1772, Ehrenström resigned from his positions and retired to his Djurönäs Estate to live a private life.

The military defeat led to increased political unrest in Stockholm and culminated in a coup against Gustav IV Adolf.

[1] Gustaf Mauritz Armfelt and Johan Fredrik Aminoff urged Ehrenström to relocate from Sweden to the newly established Grand Duchy of Finland in the Russian Empire.

[1] Ehrenström's analytical and creative writing skills played a crucial role in the final decision regarding the capital of Finland.

This plan was eventually approved by Tsar Alexander I of Russia, Grand Duke of Finland, and the city redesigned, led by German architect Carl Ludvig Engel.

Ehrenström consulted the Italian-born architect Giacomo Quarenghi, who designed notable buildings in Saint Petersburg during the era of Catherine the Great.