Marmaduke De Lumley
Marmaduke was born on September 4th, 1314 in <Of, Raby With Keverstone, Durham, England>.¹   He died at the age of 51 on September 26th, 1365.¹ 

 Margaret Holland
Margaret was born about 1325.¹   Margaret is no longer alive.¹ 

 Ralph De Lumley
Ralph was born about 1364 in Lumley, England.^1 1