Guastalline
noun
Guas·tal·line
ˈgwästəˌlēn,
gwäˈstälə̇n
plural -s
: a member of a Roman Catholic sisterhood established in Milan about 1535 to manage an institute for the orphans of noble families
called also Daughter of Mary
Word History
Etymology
after Countess of Guastalla †ab 1569, who founded the sisterhood