The plant receives its name from the shape of the leaves; just look at the ears of Mary's little lamb. Mary's school house, where the event actually occurred, was in Sterling, Mass. and was purchased by Henry Ford to be preserved. The poet of the poem about Mary's little lamb was Sara Josepha Hale (1788-1879), a very industrious and significant woman worthy of Googling.
Lamb's ear was once used as a dressing for wounds because of its antiseptic properties. Did a bee sting you? Wrap some lamb's ear over the bee sting and hold it in place with gauze. For this reason it was used during the American Civil War for wounded soldiers lying in the field of battle. Those of the medieval times found lamb's ear appropriate for the same reason.
It, also, was called "woman's comfort" because it helped with women's health concerns. It was also helpful for hemorrhoids.
The plant has been used as a dye.
In the West Indies a wonderful tea is made from the leaves. We understand that it tastes like chamomile.
Betony is of the stachys (lamb's ear) family. Legends share that when snakes are placed within a ring of betony they will fight each other to the death.
In Greek legends betony was discovered by Chiron the Centaur. Centaurs were a creature with a horse's body and legs with a man's chest and head, drinking and carousing like crazy with his bow and arrows. Chiron was different. He was gentle and kind, and a teacher of many, according to Greek legends.