Abāmūn of Tarnūt is a saint and was a martyr

Martyr

A martyr is somebody who suffers persecution and death for refusing to renounce, or accept, a belief or cause, usually religious.-Meaning:...

 of the fourth-century Coptic Church. He is known only from his name being mentioned in the Synaxarion of Mikhail of Atrib (c.1240). His feast day is 27 Abīb (April).

While residing in Upper Egypt

Upper Egypt

Upper Egypt is the strip of land, on both sides of the Nile valley, that extends from the cataract boundaries of modern-day Aswan north to the area between El-Ayait and Zawyet Dahshur . The northern section of Upper Egypt, between El-Ayait and Sohag is sometimes known as Middle Egypt...

, Abāmūn was a witness to the persecution of Christians at that time. He presented himself to Arianus, the governor of Antinoopolis, as a Christian. The governor tortured Abāmūn through a variety of methods, including blows, nails in the body, iron combs, and stringing him up. Thereafter, Arianus sent Abāmūn to Alexandria

Alexandria

Alexandria is the second-largest city of Egypt, with a population of 4.1 million, extending about along the coast of the Mediterranean Sea in the north central part of the country; it is also the largest city lying directly on the Mediterranean coast. It is Egypt's largest seaport, serving...

. There, Abāmūn's example inspired a number of other Christians to accept martyr

Martyr

A martyr is somebody who suffers persecution and death for refusing to renounce, or accept, a belief or cause, usually religious.-Meaning:...

dom.

One of the others who was inspired by Abāmūn's example was a girl named Theophila. She criticized the governor and his allies, specifically including criticism of their idolatry

Idolatry

Idolatry is a pejorative term for the worship of an idol, a physical object such as a cult image, as a god, or practices believed to verge on worship, such as giving undue honour and regard to created forms other than God. In all the Abrahamic religions idolatry is strongly forbidden, although...

. For this, she was cast into the fire. The fire did not harm her, however, so she was subsequently beheaded.

Abāmūn himself had his limbs cut off and was beheaded.

Church of Saint Abamūn

The church of Saint Abamūn, while bearing his name, may not necessarily be devoted to Abāmūn of Tarnūt. There was another matyr of similar description who bore the same first name, and because the church only mentions a Christian name, it cannot be sure whether the church was dedicated to Abāmūn of Tarnūt or Abāmūn of Tukh

Abamun of Tukh

Abāmūn of Tukh is a Coptic Egyptian martyr known only from a mention of him in the Synaxarion of Mikhail of Atrib. His feast day is Abib 13 in the Coptic calendar.-Biography:...

, who was also mentioned in the Synaxarion of Mikhail of Atrib. There is yet another Abamun, included in Les Martyrs d'Égypte

Les Martyrs d'Égypte

Les Martyrs d'Égypte is a work by Hippolyte Delehaye, included in Analecta Bollandiana #40. It contains references to several saints, including:*Abadiu of Antinoe*Abāmūn of Tarnūt*Kirdjun-References:...

by Hippolyte Delehaye

Hippolyte Delehaye

Hippolyte Delehaye was a Belgian Jesuit who was a hagiographic scholar and an outstanding member of the Bollandists, who established critical editions of texts relating to the Christian saints and martyrs that were based on applying the critical method of sound archaeological and documentary...

, who seems to be this individual, as he was stated to have been martyred in Alexandria.