David De Strathbogie
David was born in 1332.  He died at the age of 37 on October 10th, 1369.

 Elizabeth De Ferriers
Elizabeth was born in 1358.

 Elizabeth De Strathbogie
Elizabeth was born in 1353.  She died at the age of 63 in 1416.

 Philippa De Strathbogie
Philippa was born in 1355.  She died at the age of 40 on November 2nd, 1395.