But later Hugh demanded his parents share power with him , and rebelled against his father in 1025 .
At Constance 's urging , her eldest son Hugh Magnus was crowned co-king alongside his father in 1017 .
Later Hugh Magnus demanded son 's parents share power with him , and rebelled against father father in 1025 .
At Constance 's urging , her eldest son Hugh Magnus was crowned co-king alongside his father in 1017 .