Strata Florida Abbey (Welsh: Abaty Ystrad Fflur) ( is a former Cistercian abbey situated just outside Pontrhydfendigaid, near Tregaron in the county of Ceredigion, Wales. The abbey was originally founded in 1164. The name Strata Florida is a corruption of the Welsh Ystrad Fflur, meaning Valley of (the river of) Flowers. Ystrad corrupts into Strata, while Fflur (flowers) is the name of the nearby river. After the region around St. David's was firmly occupied by the Norman Marcher lordship of Pembroke by the early 12th century, with St. David's firmly under Norman influence thereafter, the princely Dinefwr family of Deheubarth transferred their patronage to Strata Florida, interring many of their family members there.