Mirza Jabbar Asgarzadeh was born in Yerevan, Armenia. His origin was from Tabriz or Urmia in the Iranian Azerbaijan region. The first kindergarten he established was called the baghch-e atfal (Persian: باغچه اطفال) which means the "kids garden". That is why he was given the nickname baghcheban (Persian: باغچه بان) which literally means "gardener" in the Persian language.
He founded a school for the deaf in 1924. That school was located next to his kindergarten. In 1928 he wrote the first Iranian children's book in Persian. The book was called baba barfi (Persian: بابابرفی) which means means "snow daddy" in Persian.
^a Sign-language names reflect the region of origin. Natural sign languages are not related to the spoken language used in the same region. For example, French Sign Language originated in France, but is not related to French. Conversely, ASL and BSL both originated in English-speaking countries but are not related to each other; ASL however is related to French Sign Language.
^b Denotes the number (if known) of languages within the family. No further information is given on these languages.