Postnik Yakovlev

Postnik Yakovlev was a Russian architect from Pskov, active in the mid-sixteenth century. He helped erect the Cathedral of Saint Basil the Blessed on Red Square in 1555–1560 to mark the conquest of Kazan.

Barma, also associated with the building, may have been his nickname or an assistant's. In 1561–1562 he designed the walls of the Kazan Kremlin and its Annunciation Cathedral, and in 1588 added a chapel to Saint Basil's.

Legend claims Ivan the Terrible blinded him so he could never build anything more beautiful. His later works, however, suggest the story is a myth.