Warning: contains SPOILERS for Bridgerton season 2.
There's a reason why Penelope Featherington (Nicola Coughlan) in Bridgerton season 2 uses an Irish accent while in disguise. Working under the pseudonym Lady Whistledown, Penelope writes a popular gossip pamphlet read by London's high society. With the help of servants, footmen, and carriage drivers, Penelope eavesdrops and gathers information to write about. Topics usually of interest include people who are courting each other, the Queen's choice for the season's diamond, the family drama happening in the ton, and so on.
Because of how scandalous the gossip can be, it's pertinent that her identity remains a secret. Particularly in a time when it was discouraged for women to make a living, Penelope's operation needs to be all the more covert. There's a reason why so few people know Penelope's Lady Whistledown secret. Using an extensive system that allows her to publish her pamphlet without anyone knowing about it, Penelope takes her draft to the publisher at night while disguised as an Irish maid. Not even the publisher can know who she really is.
Related: Bridgerton: Why Penelope Featherington Always Wears Yellow
The maid is specifically Irish for a reason, and it's not just for the sake of hiding Penelope's nationality, much less her identity. Penelope's actress Nicola Coughlan is Irish, so it's natural for her to showcase an Irish accent while her character is in disguise. However, it's worth noting that Penelope's accent is specifically in the more popular Dublin dialect, which differs from Coughlan's native Galway accent on the other side of the country. The difference is hard to tell for anyone not native to Ireland. Coughlan exhibited much more differing accents
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