Sir John de Beaulieu
Sir John was born in 1240 in Carleton, Yorkshire, England.¹   He died at the age of 61 in 1301.² 

 Laderina De Bruce
Laderina was born in 1240 in Skelton Castle, Yorkshire, England.² 

 Sibyl de Beaulieu
Sibyl was born in 1270 in Carleton, East Riding, Yorkshire, England.²   She died at the age of 32 in 1302 in Stapleton, Yorkshire, England.³