Strata Florida Abbey (Welsh: Abaty Ystrad Fflur) is a former Cistercian abbey founded in 1164 near Ponrhydfendigaid, in the county of Ceredigion, Wales. The name Strata Florida is a corruption of the Welsh Ystrad Fflur, and has a double meaning; "Valley of (the river of) Flowers". Ystrad corrupts into "Strata", while Fflur ("Flowers") is also 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. The Abbey is now in the care of CADW – Welsh National Heritage