I have a horrible ex husband, a real pain.
Oh sorry! social relationships, an ex (plural is exes) is someone with whom a person was once associated
Yes and there are often contentious issues with an ex husband like finances, property or custody
Legal rights of women in history
The legal rights of women refers to the social and human rights of women. One of the first women's rights declarations was the "Declaration of Sentiments". The dependent position of women in early law is proved by the evidence of most ancient systems.
Mosaic law.
In the Mosaic law, for monetary matters, women's and men's rights were almost exactly equal. A woman was entitled to her own private property, including land, livestock, slaves, and servants
Ex (relationship)
In social relationships, an ex (plural is exes) is someone with whom a person was once associated, in a relationship or marriage. As a prefix, "ex-" can refer to a variety of different relationships; for example, one might refer to a music group's "ex-guitarist", or someone's "ex-friend". 
When used alone, "ex" as a noun is assumed to refer to a former sexual or romantic partner, especially a former