Qu Yuan
The parallel lives of Wu Zixu and Qu Yuan have been noted, not just being cast into water, but being "Confucian martyrs", both deaths being the result of acting as scrupled ministers giving his king cautionary advice. While both were propped up by the "Confucian literati", Zixu seems to be the more favored of the two to Confucian minds, though later Qu Yuan later became more popular and supplanted Zixu as water deity.