Rees

The surname Rees is derived from the Welsh personal name 'Rhys', which has ancient Celtic origins. The name 'Rhys' is believed to be derived from the Old Welsh word 'ris', meaning 'ardor' or 'fiery'. It can also be associated with the word 'rhys', which means 'running' or 'swift'. 

The Rees surname has Welsh roots and is derived from the patronymic naming tradition. The original holder of the surname Rees would have been someone who was the 'son of Rhys'.

In Wales, the surname Rees is most commonly found in Pembrokeshire and Carmarthenshire in southwestern Wales as well as in Ceredigion, along the western coast of Wales.

In the US, the surname Rees is most commonly found in 

1. Pennsylvania

2. Utah

3. California

4. Ohio

5. New York

Americans with the name- Edward Herbert Rees - Kansas Congressman and State Senator