Dunlaing O Caellaide - How can he be both male and female at the same time?

Dunlaing is a man's name. Taidg is a man's name. Dirborgaill is a woman's name.

Okay did not hit right names - there are two Dunlaing - under 2 profiles -

Derborgaill ingen Taidg O'Caellaide MP
Birth: circa 1000 Ireland
Death: 1098 (98) Glendaloch

Immediate Family:

Daughter of Taidhg mac Gilla Patraic (Macgillapatrick) Taidhg Mac Gilla Patraic?

and

Dunlaing O Caellaide @Dunlaing ÓCaellaig

Wife of

Tadg an Each (ogh) Ghal Ó Conchabhair, King of Connaught;

Dunlaing Ó Caellaide and

Toirdelbach Ua Briain, High King of Ireland

getting confused - sorry