Caina: Circle 9, Inferno 32   Dante divides circle 9, the circle of treachery--defined in Inferno 11 as fraudulent acts between individuals who share special bonds of love and trust (61-6)--into four regions. Caina is named after the biblical Cain (first child of Adam and Eve), who slew his brother Abel out of envy after God showed appreciation for Abel's sacrificial offering but not Cain's (Genesis 4:1-17); condemned to a vagabond existence, Cain later built a city (named after his son, Henoch) that for certain Christian theologians--notably Augustine (City of God, book 15)--represented the evils of the earthly city. In the circle of the lustful, Francesca identified her husband (Gianciotto)--who murdered her and Paolo (Gianciotto's brother)--as a future inhabitant of Caina (Inf. 5.107). Dante's attention is here drawn to two brothers, the ghibelline Napoleone and the guelph Alessandro, who murdered one another because of a dispute over their inheritance (Inf. 32.55-60).