Rowan draws on two related threads: the Irish ruadh, "little red one," and the rowan tree itself, long used in folk tradition to ward off harm. Together they give the name a protective undertone, paired with a warmth suggested by its color association.
When you are loathed use Venus who has very strong influx and quick response in this and other aspects, and means renovation and growth. - Picatrix (Andalusia, ~1000.AD)