What is the name of the first person over whom the Funeral Prayer (Salat al-Janazah) was performed?

The first person the Prophet, peace and blessings be upon him, prayed over directly was As'ad ibn Zurarah. The first person he prayed over in the grave was Al-Bara' ibn Ma'rur. The first person he prayed over in absentia was An-Najashi. As for the first to pray the funeral prayer over the Prophet, peace and blessings be upon him, it was his uncle Al-Abbas, then the Muhajirun (Emigrants), then the Ansar (Helpers), then the people of the villages. The questioner is advised to ask about matters that entail action.