In Gallo-Roman religion

Gallo-Roman religion

Gallo-Roman religion was a fusion of the traditional religious practices of the Gauls, who were originally Celtic speakers, and the Roman and Hellenistic religions introduced to the region under Roman Imperial rule. It was the result of selective acculturation....

, Segomo ("victor, mighty one") was a war god worshipped in Gaul

Gaul

Gaul was a region of Western Europe during the Iron Age and Roman era, encompassing present day France, Luxembourg and Belgium, most of Switzerland, the western part of Northern Italy, as well as the parts of the Netherlands and Germany on the left bank of the Rhine. The Gauls were the speakers of...

. In Roman

Roman Empire

The Roman Empire was the post-Republican period of the ancient Roman civilization, characterised by an autocratic form of government and large territorial holdings in Europe and around the Mediterranean....

 times he was equated with Mars

Mars (mythology)

Mars was the Roman god of war and also an agricultural guardian, a combination characteristic of early Rome. He was second in importance only to Jupiter, and he was the most prominent of the military gods worshipped by the Roman legions...

 and Hercules

Hercules

Hercules is the Roman name for Greek demigod Heracles, son of Zeus , and the mortal Alcmene...

. He may be related to Cocidius

Cocidius

In Romano-British religion, Cocidius was a deity worshipped in northern Britain. The Romans equated him with Mars, god of war and hunting and with Sylvanus, god of forests, groves and wild fields...

, a similar god worshipped in Britain. He is commonly associated with the eagle or hawk. The name of the legendary High King of Ireland

High King of Ireland

The High Kings of Ireland were sometimes historical and sometimes legendary figures who had, or who are claimed to have had, lordship over the whole of Ireland. Medieval and early modern Irish literature portrays an almost unbroken sequence of High Kings, ruling from Tara over a hierarchy of...

 Nia Segamain

Nia Segamain

Nia Segamain, son of Adamair, was, according to medieval Irish legend and historical tradition, a High King of Ireland. He took power after killing his predecessor, Conall Collamrach. Geoffrey Keating says his mother was the presumed woodland goddess Flidais of the Tuatha Dé Danann, whose magic...

, which translates as "sister's son or champion of Segamon", may be related.