From Venice or lady of Venice
Venicia is a rare elaboration of the name Venice, referring to the iconic Italian city. It likely stems from the Latin tribal name Veneti, which is associated with the color sea-blue or the concept of 'friendly' and 'beloved'.
Less common today
Venicia isn't in the latest US Top 1000. It last peaked at #8,138 in 1990.
US births per 5-year period, 1990βpresent (SSA data).
The girl who suggested the name 'Pluto' for the ninth planet
English-American film and television actress
British educator known for naming the planet Pluto