Carl Alexander Herrmann (latvian: Karls Aleksandrs Hermans; 1847–1928) initially worked in his father's workshop in Liepāja. In 1877, he moved to Saint Petersburg to build an organ and remained there until 1895. Afterwards, he briefly relocated to Kadrina in Estonia. Details about his subsequent life and career remain unclear.

https://de.wikipedia.org/wiki/Herrmann_(Orgelbauer)#Orgeln_(Auswahl)