I have read the previous discussions, which were centered on issues of which I no additional knowledge to add.
However, in the documentation provided, it states that he married Willa di Spoleto (born di Toscano).
Also, Wikitree also lists he as his wife. Here is the reference;
Source: WikiTree
URL: https://www.myheritage.com/research/record-10109-33502603/oberto-di...
Confidence: Direct and primary evidence
Citation text:
Oberto di Milano (born Toscana)
Gender: Male
Birth: 912
Death: Oct 15 975
Father: Adalbert II Toscana
Mother: Bertha Carolingian
Wife: Willa di Spoleto (born Spoleto)
Child: Oberto di Milano (born Toscana)
I would like permission to add her as his wife, and to add profiles for her parents and other ancestors of hers as well.