Proverb request: A person who is very stubborn

Question

In India, we say, "It was a one legged hen."

"This saying may have originated from an incident where a king's cook ate a chicken leg while preparing biryani. When the king asked about the missing leg, the cook claimed it was a one-legged hen. Despite being caught, the cook stubbornly stuck to his story, leading to the phrase 'one-legged hen' describing someone who stubbornly clings to a false claim."

I am looking for an English equivalent which can be used to describe someone who is being stubborn or sticking to their own false or incorrect statement.

Answer 1

I can't think of an English proverb with an equivalent meaning, but there are a few phrases that might be useful
Blind to the truth - the truth is there but you won't accept it.
Stubborn as a mule - mule are said to refuse to move however they are enticed.
Going down with the ship - ship's crew (particularly the captain) stay on a sinking ship despite means of escape being available.
In the face of reality - refusing to accept the evidence.
But none of them completely convey the same meaning.

Answer 2

I don't think there is an English equivalent, but I'll add to Peter's suggestions.

These address holding on to an idea, but they apply whether that idea is true or false:

• Stick to your guns

• Dig in your heels

These address an idea that's false, but aren't that strong on holding on to the idea:

• Bury your head in the sand

• Refuse to face facts

Answer 3

Bald-faced liar

Originally this was "bold" because it means someone who ignores how easily the lie is detected, but semantic drift took over.