Meaning of Òsínbàjò
The (head of the) Ọṣìn divinity has returned from a journey.
"In his native Ijebu, one of the oldest and most distinct dialects of the Yoruba language, Ọsìn could also refer to a “child” and Ọsínbàjò (Osìn bọ̀ láti àjò) could then be interpreted to mean a child has returned from a journey." From https://www.thecable.ng/osibajo-osinbanjo-osinbajo-meet-nigerias-newest-politician-buharis-running-mate Ọṣìn (also sometimes written as Ọsìn or Ọshìn) is common in many Ìjẹ̀bú names like Ọsìnọ́wọ̀ or Ọ̀shítẹ̀lú, etc, referring to the Ọṣìn divinity.
Glossosìn - (head of) the Ọsìn divinity, king
bọ̀ - return, come back
àjò - journey
Yẹmí Ọ̀sínbàjò, the vice-president of Nigeria (2015- )