The expulsion of the Moors and the conquest of Granada by Ferdinand was the reason why Catherine of Arragon bore three pomegranates on a shield surmounted by a crown, which was the badge of Grenada [the pomegranate]. -She was the daughter of Ferdinand.

From Historical Anecdotes of Heraldry and Chivalry by Susannah Dawson Dobson, p127

On the marriage of Josceline with Agnes, he took by express stipulation the name of Percy, that he might preserve the name of the house; and he quartered his arms with were or, a lion rampant azure, with hers, which were azure five fusils in fess or.

From Historical Anecdotes of Heraldry and Chivalry, by Susannah Dawson Dobson, p110