William DOUGLAS
William was born in 1327.  He died at the age of 57 in May 1384.

 Margaret STEWART
Margaret was born about 1340.  She died in 1417 in Preston Pons, Scotland.

 George DOUGLAS
George was born about 1376 in Mar, Aberdeenshire, Scotland.  He died in 1402 in Battle of Hamildon, Lancashire, England.