Melanie Blatt
Birth Name: Melanie Ruth Blatt
Place of Birth: St. Pancras, London, England, U.K.
Date of Birth: 25 March, 1975
Ethnicity: Ashkenazi Jewish, French
Melanie Blatt is a British singer, songwriter, and actress. She rose to fame in 1997 as a member of the girl group All Saints, with Natalie Appleton, Nicole Appleton, and Shaznay Lewis.
Melanie is the daughter of Helene M. Guillaume and author and travel expert David Blatt.
Her father is Jewish (of Polish Jewish and Russian Jewish descent). Her mother is from France. It is not clear if she is also Jewish.
Melanie has a daughter with her former partner, musician Stuart Zender, of the band Jamiroquai.
Source: http://www.theguardian.com
citation
Stuart Zender was a member of band Jamiroquai: https://en.wikipedia.org/wiki/Jamiroquai
https://ethnicelebs.com/jay-kay
Mother is Helene M. Guillaume.
These might be her paternal grandparents;
https://familysearch.org/ark:/61903/1:1:QVDQ-D49N