Breese is a Welsh patronymic surname. Before surnames were common in Wales, people were known by patronyms - that is by reference to their male ancestors. For example, Gruffydd ap Helyin ab Owain, means Gruffydd, son of Heylin, son of Owain. Surnames were adopted as English influence increased in Wales. The majority of surnames were derived from patronyms. Thus John ap John, would become John Jones, or sometimes John John. In some cases the 'p' or 'b' from 'ap' or 'ab' was prefixed to the surname., creating surnames such as Bowen (from ab Owen) and Prichard (from ap Richard). Typically surnames beginning with a vowel would be prefixed with a 'b' and surnames that began with constants a 'p'. However, this was not always the case and is the source of surnames such as Bloyd (from ab Lloyd). Thus Breese is derived from a concatenation of 'ab' and the Welsh forename Rhys; and as such the surname is of the same origin as Price, Pryce, Preece and Prys.

It appears the surname arose predominately or only in Montgomeryshire and is heavily connected with the parish of Llanbrynmair, where the Breeses were yeoman farmers with a penchant for inter-marriage. The surname is still common in Montgomeryshire and Shropshire, but today is more often rendered Breeze. Breese family traditions state that there were two Breese families in Montgomeryshire, one being "Y Breesiaid Bloesgion" and rumoured to be French or Flemish in descent, likely changing their name to blend in.

It has also been suggested that this surname could derive from the old English 'breosa', meaning lively, but it appears there is no foundation for this claim.

Early Renderings include:Stolen from Fore bears

• Elizabth Bryes, widow of Llanbrynmair, 1586, Welsh Probates
• Robert Breese, of Poulton, Cheshire, yeoman, 1666, Cheshire Wills

Most probably of recent introduction from England, where Breese and Breeze are from Welsh Ab-Rees, 'son of Rees (Rhys).'.

(Celtic) for the Welsh ab-Rees or ab-Rhys = Son of Rees or Rhys: v. Rhys [Welsh ab, son (of]

(Welsh) The son of Rhys (ardor, a rush).

Corresponds with Bresi, a Northman name in the Landnamabok, by metathesis for bersi, Old Norse, a bear. Ferguson.

Ab Rhys, Ap Rees. Welsh.

(Welsh.) A contraction of Ap Reese, the son of Reese, or Rice (which see); so Bevan from Ap Evan, Brice from Ap Rice, etc. Brys, Welsh, agility, quickness; Bresse, local, a small territory in Burgundy, France.

The name of Breese or Breeze was represented in this county in the reign of Henry VIII. by a parishioner of Hackford called Breze (Bl.). The Norfolk name has probably not a common origin with the North Wales name of Breese, which is a contraction like Preece, of Ap Rees.

The North Wales name of Breese like Preece is a form of Ap Rees. Breeuse and Breeze are old Norfolk names, where it is probable they have had a different origin, Brese being the form in the time of Henry VIII.