Noticed this rather late.

Bigamy was not legal in Mexico. Villa was what now would be called a sexual predator. In his military campaigns and travels he often would single out an attractive woman or girl and pursue her. This was very quickly known, and mothers would often hide away their daughters when the Army of the North came into their town. His "marriages" were quite often just a pretense. A judge would be asked to perform the ceremony, and Villa would then later demand that the judge destroy the marriage record. Soledad Seañez, his wife of later years, said in a letter pleading for the President of Mexico to help her get education for her children:

...there are still witnesses alive who were present when the marriage document was signed, but this document can nowhere be found now that I have tried to obtain a copy, and I understand now that all this was just a simulated legal marriage in order to persuade me to live with him

At his death , along with numerous children from his many brief liaisons and mistresses, there were three women- including Seañez- who claimed to be Vila's wife. Villa had not left a will, and left a a considerable fortune, including a valuable hacienda in Chihuahua. The result was the "Battle of the Widows" over the property. The first wife, Luz Corral, actually had documentation of her marriage and won. In later years, when there were public ceremonies at Villa's grave, all three widows would attend, march forward and lay flowers, each trying to remove the flowers the preceding wives had put there.

Friedrich Katz: The Life and Times of Pancho Villa