William de Brus, 3rd Lord of Annandale

Christina mac Uhtred Christina of Galloway (fl. late 12th century) or Christina mac Uhtred was a Scottish noblewoman and member of the ruling dynasty of Galloway, who married William. Christina was the daughter of Uhtred of Galloway, who co-ruled the semi-independent Lordship of Galloway from 1161 until his death in 1174. Uhtred, son of Fergus of Galloway, belonged to a dynastically powerful family within the Norse-Gaelic border regions of Scotland. Her mother was Gunhilda of Dunbar.

As a daughter of the Galloway ruling family and spouse of the Annandale Bruce line, Christina served as a bridge between Norse-Gaelic Galloway and the rising Bruce dynasty.

After William's death, she remarried, as his second wife, Patrick I, Earl of Dunbar.

Family William de Brus and Christina mac Uhtred had three sons together: Robert de Brus, Lord of Annandale (died 1226), married Isobel of Huntingdon, had issue; his great-grandson became Robert the Bruce, King of Scotland. John de Brus William de Brus

Through their son Robert, their lineage directly contributed to the Wars of Scottish Independence and the royal claim of Robert I of Scotland.

Death William de Brus died on 16 July 1212.