- Father is Swedish; mother is British.
- Went to the famed Alfred Fredrik's Music School in Stockholm as a child.
- Started acting at age 15, when she was cast in the prime-time Swedish soap opera Nya Tider.
- Nominated for a Rising Star Award at the Stockholm International Film Festival in 2011.
- There are claims that Ferguson may be a very distant relative of Sarah, Duchess of York. Rebecca's mother, Rosemary, is British and moved to Sweden when she was 25.