Mr Jonathan, also the chairperson of WAEF, and other elders left Abuja on Thursday for Dakar, where they will remain until next Wednesday.
The elders urged African leaders to put citizens’ welfare, peace, and security at the centre of governance, to consolidate democracy in the region.
Sierra Leone’s 2023 elections will be the country’s sixth democratic election and the fifth since the end of the civil war in 2002.
Former first lady Patience Jonathan has encouraged Nigerian students to aspire to become first lady, president, governor, and senator, urging them to prioritise education.