The street Vilhonkatu (approximately meaning "Wilhelm's street") was named in 1836, probably after the senator Otto Wilhelm Klinckowström, who oversaw the organisation of the Kaisaniemi park in the 1830s. The street had originally been named Wästra Mellan Gatan (Swedish for "western middle street") since 1820. The street got a Finnish name Vilhelminkatu in 1909, and was further renamed Vilhonkatu in 1928.
The street Vilhonkatu (meaning "Wilhelm's street" approximately) was named in 1836 after Senator Otto Wilhelm Klinckowström, who managed the Kaisaniemi park organization during the 1830s. The street had been called Wästra Mellan Gatan (Swedish for "western middle street") since 1820 and was renamed Vilhelminkatu in 1909 before being changed to Vilhonkatu in 1928.