Wales

The Stanley have been in Wales for centuries, although these Stanleys are probably just distant cousins of the Stanleys from just over the border in England, particularly Cheshire.

There is documented evidence for this for the Stanleys of Holt & Anglesey in particular.
 

 Anglesey

 Denbighshire
Chirk (St. Mary's Church)
Ewloe (Guy Stanley)
Hawarden (James Leonard Stanley)
Ruthin & Wrexham (James Leonard Stanley)

 Flintshire
Holt (Jorge H. Castelli)
Holt (St. Chad's Church)
Holt. (Lands in Over Tabley, Lancs., granted to Sir William Stanley of Holt)

Mold (St. Mary the Virgin's Church)
Mold (St. Mary's Church & the Stanleys)

Shotton. (Shotton Hall)