The Welsh nobility refers to the class of landowners and aristocrats in Wales during the medieval and early modern periods. They played a significant role in the governance and social structure of Welsh society, often holding titles such as Lord or Baron. Many noble families were linked to the ruling dynasties of Wales, such as the House of Gwynedd and the House of Deheubarth. Welsh nobles were influential in local politics and military matters, often leading their own armies in conflicts. They also contributed to the cultural life of Wales, supporting the arts and the Welsh language. The decline of the Welsh nobility began with the annexation of Wales by England in the 16th century, which integrated Welsh lands into the English legal system.