Richard Thistlethwaite (1570 – March 5, 1619) was the 12th great-grandfather of Cometan, classified as one of Cometan’s distant paternal ancestors in the McKerney family line. Born in Dent, Yorkshire (in modern-day Cumbria), Richard was the husband of Jane Hall (1570 – 1620), whom in married in 1585 at the age of just fifteen, and is known to have had one son named Geoffrey who was born in 1602. Richard’s parents are recorded as Alexander and Isabel Thistlethwaite.
In Cometanic ancestry, Richard is categorised as part of the 14th generation retrograde, classifying him as a distant ancestor of Cometan.