I was reading an article about Artemisia Gentileschi, the Italian Baroque artist whose brilliant renderings of biblical and classical scenes earned her commissions from some of the most powerful figures in 17th century Europe, including King Charles I.
The article says that "in 1618 she embarked on a four-year affair with nobleman Francesco Maria Maringhi, a part of her story only discovered in 2011 when a collection of letters came to light. Her husband apparently tolerated the relationship, at least for a while. This was not entirely unusual in the context of marriages of convenience, especially in a case like this where Maringhi’s patronage was useful to the couple."
So Mrs. Bagwell's arrangement with her husband and Pepys was far from unique in the days when arranged marriages ignored emotions, and divorce was impossible.
Chart showing the number of references in each month of the diary’s entries.