John (of Herdmanston & Polwarth) St. Clair
John (of Herdmanston & Polwarth) was born about 1397 in Polwarth, Berwickshire, Scotland.  He died on December 20th, 1466 in Herdmanston, East Lothian, Scotland.

 Isobel
Isobel was born about 1400 in Scotland.  Isobel is no longer alive.

 Margaret St. Clair
Margaret was born about 1430 in Polwarth, Berwickshire, Scotland.