Mirza Abolghasem Gilani (Persian: میرزا ابوالقاسم گیلانی), known as Mirza-ye Qomi (Persian: میرزای قمی), the author of the book of Qawanin al-Usul (Arabic: قوانین الاصول, means: The Laws of Principles), was a Shiite jurist (Faqīh), mujtahid, fundamentalist (Usuli) and a religious reference (Marja') during the reign of Fath Ali Shah Qajar in the twelfth century AH. Mirza-ye Qomi was active and famous in poetry and calligraphy. He has left more than fifty thousand verses of poetry in Persian and Arabic, as well as writings in Naskh and Nastaliq scripts.