Kleopatra

Okay, so I think that Meleager was married before he left with Jason and the Argonauts.  He left his wife, Kleopatra, pregnant with their daughter, although he probably didn't know this at the time.  Kleopatra had just left to visit her family when Meleager returned from his trip, as there was no way for her to know when he would be back.  Meleager sees Atalanta at an inn, and falls in love with her.  After all, he hasn't seen his wife in awhile.  Kleopatra eventually hears about her husband's return, and is excited to tell him about their daughter.  Unfortunately, she returns in time to notice Meleager's attraction to Atalanta.  She becomes jealous, and even goes so far as to encourage Meleager's brother and uncle in their actions against Atalanta.  Unfortunately, Atalanta leaves and Meleager kills his brother and uncle, which then results in his death.  Kleopatra is left alone,  widowed with a daughter.