The definition of marmalade has evolved over the centuries.
Originally, it was a sweet spread made from the quince fruit. The term
marmalade has conflicting origins. One account holds that marmalade
was created by a doctor treating Mary, Queen of Scots, for seasickness
by mixing crushed sugar with oranges. The story infers the term
marmalade is a derivation of "Marie est malade," a French phrase
roughly meaning "Mary's illness."