Two women married to Herb? (8)

I believe the answer is:

rosemary

I'm a little stuck... Click here to teach me more about this clue!

'to herb?' is the definition.
(rosemary is a kind of herb)

I cannot understand how the rest of the clue works.

(Other definitions for rosemary that I've seen before include "Herb - girl's name" , "Fragrant evergreen shrub used in cooking" , "Grey-green herb" , "Name of girl or herb" , "Fragrant evergreen shrub and herb" .)

I've seen this clue in the Irish Times (Crosaire) and The Irish Times.

Want a hint initially instead of a full solution? Install my app