Walter Hart (or Walter Lyhert; died 24 May 1472) was a medieval Bishop of Norwich. He was Provost of Oriel College, Oxford, from 1435 to 1446. He was nominated as bishop on 24 January 1446 and was consecrated on 27 February 1446. He died on 24 May 1472.
The executors of his will are named as William Pykenham, archdeacon of Suffolk, John Bulman, Robert Hober, Henry Smyth, and another (illegible).
A rebus (/ˈriːbəs/ REE-bəss) is a puzzle device that combines the use of illustrated pictures with individual letters to depict words or phrases. For example: the word "been" might be depicted by a rebus showing an illustrated bumblebee next to a plus sign (+) and the letter "n".
It was a favourite form of heraldic expression used in the Middle Ages to denote surnames. For example, in its basic form, three salmon (fish) are used to denote the surname "Salmon". A more sophisticated example was the rebus of Bishop Walter Lyhart (d. 1472) of Norwich, consisting of a stag (or hart) lying down in a conventional representation of water. The composition alludes to the name, profession or personal characteristics of the bearer, and speaks to the beholder Non verbis, sed rebus, which Latin expression signifies "not by words but by things" (res, rei (f), a thing, object, matter; rebus being ablative plural).