However it has been argued by Jean Richard that this is a reference to Sibylla of Burgundy , Duchess of Burgundy , mother of the then - ruling duke , Hugh II .
Head entity: hugh ii Q530661 30 31
Tail entity: sibylla of burgundy, duchess of burgundy Q2069992 14 15 16 17 18 19 20
Relation (head \u2192 tail): P25
Inverse relation (tail \u2192 head): P40