Mary Etherington (née Stott; 1662 – 1741) was the 9th great-grandmother of Cometan, classified as one of Cometan’s distant maternal ancestors in the Warbrick family line. Born in St Mary in Oldham (then part of Lancashire), Mary was the wife of Thomas Etherington (1660 – 1742) and she gave birth to at least one child, also named Thomas (1685 – 1756). Mary is recorded as having died at the age of seventy-nine.
In Cometanic ancestry, Mary is classified as part of the 10th generation retrograde, categorising her as a distant ancestor of Cometan.