Christina (born 1906) was a daughter of Donald Mackay and Catherine Maclennan, 21 Valtos. She taught for a time at the side school at Morsgail before going to the Bible Training Institute and became a missionary. She served in India and was married to a minister, Donald Macdonald (Domhnall Uilleam Duin) from Harris.

They lived for 17 years in Barvas before emigrating to Canada.