Minerva McGonagall was born on the outskirts of Caithness in the Scottish Highlands, on 4 October,[1] 1935[2] to Robert McGonagall, a Muggle Presbyterian minister, and his wife, Isobel Ross, a witch. She was the couple's first child, and was named after her mother's grandmother, an immensely talented witch.[3]
Her birth proved both a joy and a crisis: Isobel had given up the use of her magic for her love of Robert, and never told him about her magical abilities as she was afraid to mar the bliss of their wedding. Minerva, however, displayed small but noticeable signs of magic from her earliest hours.