Claire admits to needing a dram and Roger says, 'I'll join you'. The liqueur Drambuie gets it's name from the Scottish Gaelic phrase, an dram buidheach, 'the drink that satisfies'. Bonnie Prince Charlie escaped to the Isle of Skye following the defeat in the Battle of Culloden in 1746, aided by Captain John MacKinnon. Information was exchanged involving the liqueur recipe between the Prince and the first MacKinnon clan. A different MacKinnon family took over the recipe and distribution.
Claire goes to a history center to do genealogy work on Roger. In the book she didn't need to. The Reverend Wakefield did it for Roger so he wouldn't forget the people he came from. Claire also claims that the couple who took Rogers ancestor who was the son of Gielles and Dugal were childless. In the book their child had just died and was switched with Rogers ancestor.
Brianna Randall Fraser has brown eyes. Claire Randall has light blue eyes and Jamie Fraser has dark blue eyes. Although there are multiple genes reported to contribute to eye color, it is very rare but possible for parents with blue eyes to bear children with brown eyes.
When talking about the founding fathers Roger says that Benedict Arnold would be similar to
Judas to which Brianna says "Benedict Arnold was a deeply misunderstood historical figure" Later her parents would meet him while fighting for the Revolution. In the books after meeting him Claire even says " and I liked him"