Herbmistress

Her mother is the queen, the most knowledgeable herbmistress and healer in Eriu.

Source: wiktionary

“And because of these facets of the craft, partial adepts can also sometimes be herbmistresses or herbmasters.”

Source: wiktionary

Ismai dragged his feet all the way from the Youths’ Quarter, to which he had been banished until someone figured out exactly what to do with him, through the children’s garden and the kitchens, and down the red-stone path to the riverside cliffs, where the herbmistress had her rooms and where Hafsa Azeina had set up her tent.

Source: wiktionary