The Dadian family was an Ottoman Armenian family that was famous for their industrial activities within the Ottoman Empire. Besides being prominent factory owners (the family had a monopoly on the empire's gunpowder industry for more than a century), members of the family also served as political advisers. The Dadians were also well acquainted with Ottoman banking.
Ohannes Bey Dadian was the director of the gunpowder factory in 1845.
References
Dadian family Wikipedia(Text) CC BY-SA