The first African-American woman to be elected a diocesan bishop succeeded a woman who annouced her retirement during what convention?
Catherine Waynick:  She was succeeded by Jennifer Baskerville-Burrows on April 29, 2017. Jennifer Baskerville-Burrows:  In October 2016, she was elected bishop of the Episcopal Diocese of Indianapolis, and she was consecrated on April 29, 2017.
i don't know