人物基督教古代近东在位306–337（与共治阶段相关）Reign 306–337 (with tetrarchic phases)
君士坦丁一世Constantine I
首位公开支持基督教的罗马皇帝（传统「归信」叙事复杂）。H 轨：宗教政策与权力；T 轨：圣君与教会恩主记忆。First Roman emperor to publicly favor Christianity (conversion narratives complex). H-track: policy and power; T-track: holy emperor and patron memory.