Sissie

Diminutive of CECILIA, FRANCES or PRISCILLA. It can also be taken from the nickname, which originated as a nursery form of the word sister.

Latinate feminine form of the Roman family name Caecilius, which was derived from Latin caecus "blind". Saint Cecilia was a semi-legendary 2nd- or 3rd-century martyr who was sentenced to die because she refused to worship the Roman gods. After attempts to suffocate her failed, she was beheaded. She was later regarded as the patron saint of music and musicians.

Due to the popularity of the saint, the name became common in the Christian world during the Middle Ages. The Normans brought it to England, where it was commonly spelled Cecily - the Latinate form Cecilia came into use in the 18th century.

Feminine form of FRANCIS. The distinction between Francis as a masculine name and Frances as a feminine name did not arise until the 17th century. A notable bearer was Saint Frances Xavier Cabrini (1850-1917), a social worker and the first American to be canonized.

English form of the Late Latin name Franciscus which meant "Frenchman", ultimately from the Germanic tribe of the Franks, who were named for a type of spear that they used. This name was borne by the 13th-century Saint Francis of Assisi, who was originally named Giovanni but was given the nickname Francesco by his father, an admirer of the French. Francis went on to renounce his father's wealth and devote his life to the poor, founding the Franciscan order of friars. Later in his life he apparently received the stigmata.

Due to the renown of the saint, this name became widespread in Western Europe during the Middle Ages. However, it was not regularly used in Britain until the 16th century. Famous bearers include Saint Francis Xavier (1506-1552), a missionary to East Asia, the philosopher and scientist Francis Bacon (1561-1626), and the explorer and admiral Sir Francis Drake (1540-1595). In the English-speaking world this name is occasionally used for girls.

Roman name, a diminutive of PRISCA. In Acts in the New Testament Paul lived with Priscilla and her husband Aquila in Corinth for a while. It has been used as an English given name since the Protestant Reformation, being popular with the Puritans. Henry Wadsworth Longfellow used it in his poem 'The Courtship of Miles Standish' (1858).

Feminine form of Priscus, a Roman family name which meant "ancient" in Latin. This name appears in the epistles in the New Testament, referring to Priscilla the wife of Aquila.