Rabbi Bernhard (Broich Baruch?) Lieber (Leiber) - Baruch Lieber, my great grandfather

I wonder if someone can help me solve the mystery of Baruch Lieber's family tree. My mother's mother was Milka Baila Lieber who was daughter of Baruch and Hendel Lieber. Baruch was son of Nasan Binyamin and Milka Baila Lieber. However there is no mention of Baruch's wife Hendel and my grandmother on this tree. Was there perhaps a second marriage?