Sionann

The name of an Irish goddess, a granddaughter of Lir, who was the personification of the River Shannon. Her name is derived from the name of the river (see SHANNON).

SHANNON   female & male   English
From the name of the River Shannon, the longest river in Ireland, called Abha na tSionainn in Irish. It is associated with the goddess Sionann and is sometimes said to be named for her. However it is more likely the goddess was named after the river, which may be related to Old Irish sen "old, ancient". As a given name, it first became common in America after the 1940s.
EQUIVALENTS
ENGLISH: Shana, Shanna, Shannah, Shannen, Shannon, Shanon
OTHER FORMS
IRISH: Seanán, Senán, Senan