Children

 Robert De Brus
Robert was born in 1144.


 Peter I De Brus
Peter I was born in 1152.  He died at the age of 70 on December 2nd, 1222.


 Isabel De Brus
Isabel was born in 1160.  She died at the age of 70 in 1230.


 Adam De Brus
Adam was born in 1200.