http://timeline.sakura.ne.jp/01/n/1/9/2 ... 4_21J.html
But, there is more to it.
Her birthday also celebrates the founder of "the Mongol Empire", "Genghis Khan".
Her birthday also celebrates the founder of "the Mughal Empire".
"Mughal Empire" means "Mongol Empire" in the Indian language.
This story contradicts the history of the East India Company and the British Empire.
Probably, humongous paradoxical conspiracy is included in the human history.
But the story is profound.
For example, Two of Japan's most prominent, most powerful and most popular sumo wrestlers, Taiho and Hakuho, are probably included in the British royal family.
Let me describe the paradoxical conspiracy in the human history one by one later.
( hypotheses are included )