other sources, however, point to 1212 as the year of alan's grant. for instance, the thirteenth-century "gesta annalia i" states that, when the english and scottish kings concluded their treaty at norham in february 1212, alan did homage for the "extensive" irish lands that the english king had given him. the fifteenth-century historian walter bower echoed this statement, adding that alan obtained a lordship of one hundred sixty knights' fees, and took an oath on william's behalf to uphold the treaty. certain documentary sources appear to lend credibility to aforementioned accounts. specifically, a confirmation charter from john to alan, dating to 1215; a somewhat dubious copy of a letter from william to john, which makes reference to alan's seal; and the copy of a letter from the irish justiciar concerning the delivery of seisin to alan's proxies, which appears to date to april or may 1212. in july 1213, alan was granted right to the forests and fairs upon his irish lands.