MissQuinn

Do you really think Celestia would ever make him in charge of a city or district? The reality is that Flurry Heart is technically a princess. Her parents are royalty therefore she's royalty. It's just how it works. If he was a leader of Manehattan as you said he would be a mayor or governor. If Blueblood acted like he did in the Best Night Ever why would Celestia favor him out of all the leaders of cities in Equestria to become a prince? Well, Flurry is said to be an alicorn in the show and her power surges are blamed on being an alicorn. Everything the show says is canon so she's an alicorn. Also her parents are royalty so she's royalty. Also in The Journal Of The Two Sisters written by Amy Keating Rogers it says Celestia and Luna were approached by some of the leaders of Equestria to become their rulers. They didn't do anything special. They were just alicorns. The fight against Discord happened after they were crowned as seen in the season four premiere with the two sisters in their regalia.

But he's a Prince because he is related to Princesses Celestia and Luna. If he was the leader of a city of Equestria then he would be a mayor. Do you really think Blueblood is leader materiel?

Celestia and Luna are called alicorns.

Why do you think that he was Celestia's kid?

She is an alicorn. No doubt about it Celestia says her powerful power surges are due to her alicorn powers and Crlestia sats she is the furst alicorn born in Equestria. She is a royal since both of her parents are royals. That is just how monarchy works. The show never says that princesshood must be earned. In fact Celestia and Luna were only crowned rulers because of them being alicorns. They didn't really do anything to earn their titles as they were approached by some of the founders of Equestria and offered the throne. What about Prince Blueblood?

Well, Blueblood is the nephew of both Luna and Celestia, check out his wiki. Also Luna and Celestia have been confirmed to have never had children.

She's been shown wearing glasses in Lesson Zero so don't really care.

It's just a nickname on Celestia and Luna

Well he could be a descendant of a cousin of Celly and Lulu as many call their cousin's child their nephew or niece.

Good headcannon, buuuuuuuut he is the many greats and 52 times removed nephew of Celestia and Luna on their mother's side. So he could be a descendant of a child of a maternal first cousin as many call their first cousin's child their "nephew/niece"

How could he be related to her? He's the distant nephew of Celestia and Luna on their mother's side.

Well, Prince Blueblood is the many greats nephew (fifty-two times removed to be exact) nephew of both Tia and LuLu on their mother's side. So I'm guessing they had a half-sibling?

Yeah I agree with you. It does seem like it's normal for ponies to live hundreds of years.

Cadance is technically the Queen or Empress of the Crystal Empire. But she will not be referred as so because Queens are associated with evil. Thanks Disney. Celestia and Luna are not Queens because with Queens there can only be one. Yes, Celestia was supposed to be called Queen Celestia, but that was before Luna was made as there was only one alicorn at the time. Cadance has royal blood in her as she is related to the first Queen of the Crystal Empire, Amore. Look it up on her wiki. I think when you become an alicorn not only are you as powerful as a quarter of the Equestria population but your DNA changes. Cadance is part of the Crystal Empire because she was born into it and Equestria Royal Family via adoption. So automatically Flurry is a princess of the Crystal Empire and Equestria. Also you can be born into a royal title take Prince Blueblood, the distant nephew of both Celestia and Luna for example he didn't earn his royal title and so I guess he was born into his title. Flurry Heart has been mentioned as a Princess in merch.