Janet Clapham (also spelt as Jenet, or Jennet; née Scambler; c.1629 – ????) was the 10th great-grandfather of Cometan, classified as one of Cometan’s distant paternal ancestors in the McKerney family line.
Born in Caton, Lancashire, Janet was the wife of Richard Clapham (1622 – 1676) and the five children, one of whom was named Margaret and who links Janet to Cometanic ancestry. Janet is understood to have married her husband Richard on 21st May 1649 in Tatham, Lancashire.
In Cometanic ancestry, Janet is categorised as part of the 12th generation retrograde, classifying her as a distant ancestor of Cometan.