Christina of the Isles

Christina of the Isles (fl. 1290–1318) was a fourteenth-century Scottish noblewoman. She was the daughter of Ailéan mac Ruaidhrí and a leading member of Clann Ruaidhrí. Although Ailéan had two sons, Lachlann and Ruaidhrí, both appear to have been illegitimate, whereas Christina was legitimate, and possibly a daughter of Ailéan's wife, Isabella.

A fourteenth-century source states that Christina assisted Robert I, King of Scotland during the First War of Scottish Independence, when he was a fugitive and hunted by the forces of Edward I, King of England. Another fourteenth-century source declares that, when Robert mounted a counteroffensive following Edward II's demise, the Scottish king received critical assistance from an unnamed kinswoman, a woman who may have been Christina herself. Christina's support of the Bruce cause may have stemmed from her marriage to Donnchadh, who was a member of the comital kindred of Mar, a family closely related to the Bruces. It is also possible that Christina was influenced by her maternal ancestry, since there is reason to suspect that her mother was a sister of Robert's mother.

Although Christina was the canonically legitimate heir of her father, it is likely that her brothers possessed control of their family's wide-ranging territories. According to an undated charter, Christina resigned her rights to Ruaidhrí on the condition that her son possessed a stake in the inheritance.