http://www.dcs.hull.ac.uk/cgi-bin/gedlkup/n=royal?royal01838

Child 1: , Robert
Child 2: , Margaret
Child 3: Scot, Isobella le, b. 1206
Child 4: Scot, John of Chester le, Earl of Chester, b. 1207
Child 5: , Maud
Child 6: , Ada
Child 7: , Henry

Notes:
and Earl of Northumberland, Earl of Lennox, Earl of Carlise, Earl of Doncaster
See Europäisch Stammtafeln Bund II tafel 68.
Earl of Garioch, Earl of Cambridge.