燕桓公 / Duke Huan of Yan
燕桓公 / Duke Huan of Yan appears in 《资治通鉴·周纪》10丨 以家族单位 有蚂蚁吃大象的精神（1） as the successor after 燕僖公 dies in 373 BCE. The same source says 燕国 defeats 齐国 at Linghu that year.
《资治通鉴·周纪》11丨 世界风起云涌（2） closes his compact annalistic branch: he dies in 362 BCE and 燕文公 succeeds.
The page is source-scoped and records a compact succession notice rather than a full biography.