Yet between the brothers there was great love, and had been since childhood, when Boromir was the helper and protector of Faramir. No jealousy or rivalry had arisen between them since, for their father’s favour or for the praise of men. It did not seem possible to Faramir that any one in Gondor could rival Boromir, heir of Denethor, Captain of the White Tower; and of like mind was Boromir. Yet it proved otherwise at the test.
Appendix A, Return of the King, J.R.R. Tolkien