Elizabeth [4] is in Barry's Mucky Videos GA 13, GG 12, and GG 13, so these need adding to her listing.
BGAFD descibes her as a Portuguese student: although she is part Portuguese she was brought up in Poland and has now returned there. When she worked as a dancer in London she was usually known as Polish Elizabeth.
In her Ben Dover scene, she was described as Maria, a Portuguese student, so the entries for the two DVDs should say "as Maria".