Al-Zuhri (may Allah have mercy on him) said: The Messenger of Allah (peace and blessings be upon him) married Zaynab bint Jahsh bin Ri'ab bin Asad bin Khuzaymah (may Allah be pleased with her), and her mother was Umaymah bint Abd al-Muttalib bin Hashim, the paternal aunt of the Messenger of Allah (peace and blessings be upon him). And she was the first of the wives of the Prophet (peace and blessings be upon him) to pass away.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20475