“And the king loved her; and set the royal crown upon her head, and made her queen.” Esther 2.
“And a great sign appeared in heaven: A women clothed in the sun, and the moon under her feet, and on her hear a crown of twelve stars.” Apoc 12.

Pope St. Felix, in the sixth year of his pontificate, received the martyr’s crown under Emperor Aurelian, 274. It was St. Felix who commanded Masses to be celebrated over the tombs of martyrs in remembrance of which the relics of the martyrs are still placed in the altar stone.

(Source: The New Roman Missal by Father Lasance).