Dal gCais is a historical kingdom located in what is now County Clare, Ireland. It emerged during the early medieval period and was known for its strong warrior culture and significant influence in the region. The kingdom was associated with the O'Brien dynasty, which played a crucial role in Irish history. The people of Dal gCais were known for their contributions to Gaelic culture, including music, poetry, and storytelling. The kingdom's legacy continues to be celebrated in modern Ireland, particularly through its connections to notable figures like Brian Boru, a famous high king who hailed from this lineage.