enemy brothers, n.Definitions

Enemy brothers (n.) are ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠condemned to rivalry by proximity: they fight over the same heritage, crown and wife, and the story starts like a myth.