St. Monica the Imbiber?

St Monica Patron Saint of Alcoholics
 

Saint Monica was the mother of Saint Augustine of Hippo, whose writings about her are the primary source of our information. A Christian from birth, she was given in marriage to a bad-tempered, pagan named Patricius. She prayed constantly for the conversion of her husband (who converted on his death bed), and of her son (who converted after a wild life). She was the spiritual student of Saint Ambrose of Milan and was, herself, a reformed alcoholic – hence her patronage of alcoholics.

Source: Listverse

For what it's worth, the claim that Monica was an alcoholic is dubious. There is a story that she drank a great deal of wine as a child and through force of will, weaned herself from it. The account, if true, seems to be based on the testimony of a slave who witnessed the girl drinking wine. One suspects that the slave may have been concealing something by shifting the blame for disappearing wine.

 It is true that Monica's son Augustine criticized her for taking wine and food to the shrines of the martyrs, an African custom with likely pagan roots. (Confessions 6.2.2) St. Ambrose is said to have convinced her to stop taking the wine there because it might encourage drunkenness. The problem may have been that she was imbibing at the shrines, but I suspect the criticism had more to do with the connection with paganism. At any rate, she is better known for her determined prayers for the conversion of her son. Who in his youth would have driven many a mother to drink.