Sisters

3. The third sister to Stheno and Euryale in Greek mythology known for having venomous snakes for hair (6)
4. Louise May Alcott wrote about Meg, Jo, Beth and Amy (5)
5. Christabel and Sylvia were leading figures in the suffragette movement (9)
8. LaVerne, Maxene and Patty were the queens of the 1940s swing and boogie-woogie eras (7)
10. Stephania Podgorska and her sister harboured 13 Jewish people in their attic for 2.5 years (6)
11. Cassandra Austen's famous sister (4)
12. Fictional sisters from Disney's Frozen, Anna and ....(4
15. The third Bronte sister: Charlotte, Anne and ..... (5)

1. Pioneering American actresses who dominated early silent movies, Lilian and Dorothy (4)
2. Solange Knowles'famous sister (7)
4. These aristocratic British siblings were famous in th e1930s and 40s for their beauty, wit and radically opposing political ideologies (7)
6. Anne and Mary were favourites of Henry VIII (6)
7. Leah and ...... were daughters of Leban in the Old Testament (6)
9. Lee Bouvier's sister was married to an American President and a Greek shipping magnate (6)
13. Debbie, Joni, Kim and Kathy defined the disco era with their timeless anthem in 1979, "We are family" (6)
14. Tennis icons Venue & Serena (8)