A trailer is all that Ireland has seen of Hollywood's latest romantic comedy, but that has been enough to declare an Irish accent emergency. Wild Mountain Thyme stars Emily Blunt and Jamie Dornan as star-crossed lovers - and farmers - on an emerald isle posing as Ireland.

Dornan's character talks to a donkey and trips into a lake while Blunt, her hair turned auburn, stomps around fields. Gobsmacked reaction on Wednesday speculated that the film, to be released next month, would outdo Tom Cruise's 1992 drama Far and Away for paddywhackery cliches and dodgy accents.

`Even we think this is a bit much,` tweeted the National Leprechaun Museum of Ireland, as a social media pile-on gathered steam. Twitter critics said Dornan had little excuse for a ropey accent since he was from Northern Ireland.

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Filmed in County Mayo, Wild Mountain Thyme stars Christopher Walken, as the father of Dornan's character, and Jon Hamm, who plays an American and thus escapes accent scrutiny.