Peribsen is the serekh name

Serekh

In Egyptian hieroglyphs, a serekh is a rectangular enclosure representing the niched or gated façade of a palace surmounted by the Horus falcon, indicating that the text enclosed is a royal name...

 of an early Egyptian

Early Dynastic Period of Egypt

The Archaic or Early Dynastic Period of Egypt immediately follows the unification of Lower and Upper Egypt c. 3100 BC. It is generally taken to include the First and Second Dynasties, lasting from the Protodynastic Period of Egypt until about 2686 BC, or the beginning of the Old Kingdom...

 king

Pharaoh

Pharaoh is a title used in many modern discussions of the ancient Egyptian rulers of all periods. The title originates in the term "pr-aa" which means "great house" and describes the royal palace...

 who ruled during the 2nd dynasty

Second dynasty of Egypt

The second dynasty of ancient Egypt is often combined with Dynasty I under the group title Early Dynastic Period. It dates approximately from 2890 to 2686 BC. The capital at that time was Thinis.-Rulers:...

. Unlike many other pharaohs of this dynasty, Peribsen is well-attested in the archaeological

Archaeology

Archaeology, or archeology , is the study of human society, primarily through the recovery and analysis of the material culture and environmental data that they have left behind, which includes artifacts, architecture, biofacts and cultural landscapes...

 records. Peribsen's royal name is a subject of interest for Egyptologists and historians alike as it differs from the traditional practice with its connection to the deity

Deity

A deity is a recognized preternatural or supernatural immortal being, who may be thought of as holy, divine, or sacred, held in high regard, and respected by believers....

 Seth

Set (mythology)

Set was in Ancient Egyptian religion, a god of the desert, storms, and foreigners. In later myths he was also the god of darkness, and chaos...

 instead of Horus

Horus

Horus is one of the oldest and most significant deities in the Ancient Egyptian religion, who was worshipped from at least the late Predynastic period through to Greco-Roman times. Different forms of Horus are recorded in history and these are treated as distinct gods by Egyptologists...

. This is still the subject of debate

Debate

Debate or debating is a method of interactive and representational argument. Debate is a broader form of argument than logical argument, which only examines consistency from axiom, and factual argument, which only examines what is or isn't the case or rhetoric which is a technique of persuasion...

 and investigations

Research

Research can be defined as the scientific search for knowledge, or as any systematic investigation, to establish novel facts, solve new or existing problems, prove new ideas, or develop new theories, usually using a scientific method...

 as to why Peribsen chose this name.