Image Credit: LIAM DANIEL/NETFLIX Part 1 of season 4 of Bridgerton was finally released at the end of January 2026, and as with most period dramas (fictional or non-fictional), fans went through a vocabulary lesson. At one point during the season, Sophie Baek (Yerin Ha) is referred to as a "ward" of Lord Penwood (Arthur Lee). But what does that even mean? Yerin is the first Korean lead actress to join the Bridgerton cast, which she discussed while speaking with Time earlier this year. "When my agent told me it was for Bridgerton, I thought it was a supporting role," Yerin recalled.