Zara Yaqob was Emperor of Ethiopia, and a member of the Solomonic dynasty who ruled under the regnal name Kwestantinos I. He is known for the Ge'ez literature that flourished during his reign, the handling of both internal Christian affairs and external wars with Muslims, along with the founding of Debre Birhan as his capital. He reigned for 34 years and 2 months.
Zara Yaqob's letter written in the Geʽez script at the Vatican Library
Geʽez is an ancient South Semitic language. The language originates from what is now northern Ethiopia and Eritrea.
Ezana stone, written in Ge'ez explaining his conquests and accomplishments
Genesis 29.11–16 in Geʽez
Example of Geʽez taken from a 15th-century Ethiopian Coptic prayer book
The Ezana Stone, engraved from AD 330 to 356, is written in ancient Ge'ez, Sabaean and Greek.