Tagroa Siria

Sources do not provide a cosmogonic origin or narrative of creation for Tagroa Siria. Documentary material instead situates him institutionally and ritually: he is named as the supreme deity within Rotuman belief, worshiped through institutional roles such as the sau and through family practices (for example, the dedication of first-born sons). These ritual and institutional connections indicate his prominence in the society's religious structure rather than a recorded origin myth in the cited sources.

The cited sources contain no anthropomorphic description, iconography, or physical depiction of Tagroa Siria. He is referenced by title and function—most often as 'God Above' or 'God the Highest'—and appears in the literature as a named divine presence and office of devotion rather than by visual attributes.

Documented roles for Tagroa Siria emphasize his centrality to the fertility cult of Rotuma and his connection to the prosperity of the island and its people. The position of sau is described as primarily tied to the worship of Tagroa Siria and to a six-month ritual cycle, indicating ritualized invocation of his beneficence. Sources also place him above other spirits who 'communicated through the tu'ura' (spirit mediums), identifying him as the most powerful deity in the Rotuman pantheon. Beyond these points—fertility, prosperity, institutional worship, and supreme status—additional specific powers or functions are not detailed in the provided material.