Gracious
Janeece is a modern phonetic variant of Janice, which itself is an elaboration of Jane. It ultimately derives from the Hebrew name Yochanan, meaning 'God is gracious.' This specific spelling emerged in the mid-20th century as a way to emphasize the 'ee' sound.
Less common today
Janeece isn't in the latest US Top 1000. It last peaked at #7,695 in 1994.
British actress known for Waterloo Road
US births per 5-year period, 1990βpresent (SSA data).