Sandra Lewis

(female) Short form of Alessandra, the Italian form of Alexandra. A major influence in establishing this as a common given name in the English-speaking world was George Meredith's novel Sandra Belloni (1886), originally published as Emilia in England (1864); the heroine, Emilia Sandra Belloni, is a beautiful, passionate young singer.

English (but most common in Wales): from Lowis, Lodovicus, a Norman personal name composed of the Germanic elements hlod ‘fame’ + wīg ‘war’. This was the name of the founder of the Frankish dynasty, recorded in Latin chronicles as Ludovicus and Chlodovechus (the latter form becoming Old French Clovis, Clouis, Louis, the former developing into German Ludwig). The name was popular throughout France in the Middle Ages and was introduced to England by the Normans. In Wales it became inextricably confused with 2.