Regarding the founder of the Qin dynasty, who was his grandfather?
King Xiaowen of Qin King Xiaowen of Qin (reigned 250 BC) was a Chinese king, who had a very brief reign. He is also known as Lord Anguo (安國君). His grandson was Emperor Qin Shi Huang.
Duke Kang of Qi Duke Kang of Qi (; died 379 BC) was from 404 to 386 BC the titular ruler of the State of Qi during the early Warring States period of ancient China. His personal name was Lü Dai (呂貸), ancestral name Jiang (姜), and Duke Kang was his posthumous title. He was the final Qi ruler from the House of Jiang.