Both Matthew Rhys and Elliot Cowan have played the role of Mr. Darcy in different TV mini series - Cowan in Lost in Austen (2008) and Rhys in Death comes to Pemberley (2013).
The town official who is supposed to marry Jacks and Paolo is portrayed by Richard Wilson, who also portrayed Gaius in Merlin (2008). Beginning in 2008, Santiago Cabrera, who portrays Paolo in this film, co-starred with Richard Wilson on Merlin, in the recurring role of Sir Lancelot.
In this movie, the "Hollywood" version of Santiago Cabrera's character is played by Orlando Bloom. Both of those actors played characters based on The Three Musketeers - Santiago Cabrera played Aramis in the BBC The Musketeers (2014) TV show and Orlando Bloom played the Duke of Buckingham in the 2011 The Three Musketeers (2011) movie.