John St. Clair Of Polwarth
John was born after 1361 in Herdmanston,East Lothian,Scotland.  He died in 1402 in Polwarth,Berwickshire,Scotland.

 Heiress Elizabeth Polwarth
Elizabeth was born about 1356 in Polwarth,Berwickshire,Scotland.  Elizabeth is no longer alive.

 Katherine St. Clair
Katherine was born about 1375 in Herdmanston,East Lothian,Scotland.  She died after March 28th, 1450 in Seton,East Lothian,Scotland.¹ 

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