Answer
Church rights were the subject of disagreement between Thomas Becket and King Henry II. Becket, the Archbishop of Canterbury, advocated for the autonomy of the church and the clergy's immunity from secular courts. He clashed with Henry's attempts to exert control over ecclesiastical matters, leading to heightened tensions between the two. This conflict ultimately culminated in Becket's assassination in 1170, solidifying his status as a martyr for the church's independence.