I have a few of these plants in my garden and they have been there for years with little or no special care. Always a pleasure to see in the spring. They however are hard to photograph because the flowers hang down and are low to the ground.
AS for the name :when a plant ends in wort it often indicates it's usefulness as a medicinal herb.
Barrenwort is so named because it use to be thought to cause barrenness in women.