[1] Agula was visited by the Portuguese priest Francisco Álvares on 13 August 1520, who called it Anguguim.

He mentions in the town "a well-built church — upon very thick stone supports; very well hewn" which was dedicated to Saint Chirqos.

[2] The town is mentioned again in an inquiry conducted by Emperor Iyasu I in 1698, in which he proclaimed that tolls should no longer be collected there.

Based on the "limited information now recoverable", David Phillipson assigns the construction of this church a "Late Aksumite or, perhaps, a subsequent date".

[4] Based on figures from the Central Statistical Agency of Ethiopia released in 2005, Agula has an estimated total population of 4,636, of whom 2,229 are men and 2,407 are women.