Explanation

Agbonniregun (also called Setilu) was the leader Oduduwa met in Ile-Ife. He founded Ifa worship before Oduduwa arrived.

The other names belong to different historical figures or titles. Agbonniregun was specifically the Ife leader then.

Knowing who lived where first helps us understand Yoruba history. Oduduwa came later to an existing settlement.