Dee ihe ga-aga n'ihu na paragraf a - Ypotryll bụ ihe e kere eke nke Europe nke oge ochie nke e gosipụtara na heraldry. O nwere isi nke anụ ọhịa ọhịa ma ọ bụ ezì ọhịa, o nwere ahụ́ kamel nke na-akpụ akpụ, ụkwụ na ikiri ụkwụ nke oké ehi ma ọ bụ ewu, nweekwa ọdụ ogologo, nke na-akpụ akpụ nke agwọ. A na-eche na aha ya sitere na Grik <unk>hippo<unk> (ịnyịnya) ma ọ bụ na Middle English, <unk>ypotame<unk> n'onwe ya sitere na Latin "ypotamus". Ọ bụ ezie na amabeghị ọtụtụ ihe banyere ihe ihe ahụ pụtara ma ọ bụ mmalite ya, ọ dị ka akara nke John Tiptoft, 1st Earl nke Worcester, nke a makwaara dị ka "Onye na-egbu anụ nke England"; nwoke a maara maka oke obi ọjọọ ya n'ihe metụtara ogbugbu nke ndị Lancastrian n'oge ọchịchị ya dị ka Onyeisi ndị uwe ojii ukwu na mbido 1460s. A maara ihe e kere eke a n'ihi otú o si bụrụ ihe jọgburu onwe ya nke na-adịghị mma, ma eleghị anya, ọ bụ n'ihi ndị yi ya dị ka akara ha. Ndị Lancaster gbupụrụ Tiptoft isi na 1470 n'oge Agha nke Roses
(1455 ruo 1487).