Solange comes from the Latin sollemnia, meaning "solemn ceremony" or "sacred rite." Saint Solange (died 880 CE) is a French martyr; the church of Sainte-Solange near Bourges bears her name.
Solange Knowles (born 1986), the American singer and Beyoncé's sister, brought the name modern visibility.
Solange reduces to eight — the number of solemn grace.