I find myself wondering about alliterative story titles.  If it had been not a princess but a countess then I suspect she would have been traumatised by a cauliflower rather than a pea.

See Aarne-Thompson classification number 704. Also see this.

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2014-11-26 The Pea and the Princess, 5.0 out of 5 based on 4 ratings
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Pea couldn't sleep at all. Through a dozen slabs of marble and hardest obsidian he could feel something soft and yielding. By the time morning arrived he was bruised all over.