Can there be Longyang and Solanum nigrum in history? Are there any royal brothers and sisters with similar fate to them?

History of Jiang Guo: According to Records of the Historian and Biographies of the Zhou Dynasty, ancient Jiang Guo was born in the early Zhou Youwang of the Western Zhou Dynasty. At the end of the Zhou Dynasty, you Wang died at the foot of Qishan because of the bonfire, and the Western Zhou Dynasty perished. In the Eastern Period, the military commander Long led more than 654.38 million people to make Shaanxi (Jin 'an) their capital. In 453 AD, Prince Yang was born, and two years later, Kwai was born with the title of Your Highness. In 43 1 year, Yang invaded Shaanxi on a large scale, and Jiang Guo was defeated. He asked Qi Henggong for help, and Qi asked for a map of his country. After the dragon prince died, the time was not completed in March, so Qi violated the agreement and Yang sent about 500 thousand troops to crush Jiang Guocheng. There is a Taoist priest in Jiangguocheng. He said that it was successful to burn it with an ordinary sword in the fire on July 49, and only the flesh and blood of the royal family was needed. He led the remaining 2,000 people out of the city to fight. Prince Longyang killed 1000 people alone, and the rest fled, leaving only 16 people. At that time, Prince Longyang was seriously injured, and 16 people speared into Longyang. At this point, the ancient Jiang Guo was destroyed. Taking this opportunity, the State of Qi wiped out Yang and Longji Fuxing, the son of Longyang. So there really is Jiang Guo.