Una

Una (i.e. who is one), the personification of Truth, the companion of St. George in his adventures, and who, after various adventures herself, is at last wedded to him.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Umlaut * Uncial Letters
Ulster
Ultimus Romanorum
Ultramontanism
Ulugh-Beg
Ulysses
Ulysses' Bow
Uma
Umballa
Umbria
Umlaut
Una
Uncial Letters
Uncle Sam
Unconscious, The
Understanding, The
Undine
Undulatory Theory
Unearned Increment
Unicorn
Uniformity, Act Of
Unigenitus, The Bull

Nearby

Una in Brewer’s Dictionary of Phrase & Fable

Links here from Chalmers

Mercator, Nicholas
Napier, John
Petit, Peter [1617–1687]