Scritches

Do you have a link or image of the character?

There's no mention of them in any canonical source, however according to the Journal Of the Two Sisters both Celestia and Luna were raised by "the alicorns". The implications are that there was an entire group(if not entire race) of them over a thousand years ago. What happened to them, and more specifically to Celestia and Luna's parents, is anyone's guess at this point.

Eeyup! She sure did. Blew my mind when I first found out too.

They showed up in the background very briefly after Seabreeze tries to leave Fluttershy' cottage on his own.

A pretty nasty one, it's detailed somewhat more in the Celestia micro series comic, but you can see some of it here: http://i.imgur.com/HqOGFiE.jpg http://i.imgur.com/LkZqttN.jpg http://i.imgur.com/KLZmGjJ.jpg http://i.imgur.com/6e7XJs0.jpg http://i.imgur.com/xC3B9aG.jpg

Wrong, they were all familiar with at least 5 of the founding members of Equestria according to "The Journal of the Two Sisters" by Amy Keating Rogers. So they took the throne no more than a few years after the founding of Equestria. In the "The Journal Of The Two Sisters" Luna mentions "The Alicorns" implying that there were others before her and Celestia and that both Luna and her sister were raised by these alicorns. The princess in the love poison story was probably one of these alicorns or a predecessor to them. It was Celestia and Luna, hence why they were the ones who had to defeat him. This is proven by the fact they had their cutie marks and they earned their cutie marks while being on the throne. As I mentioned in an earlier post, Luna rebelled against Celestia before becoming Nightmare Moon, the conflict became so desperate that many of the survivors rallied in Canterlot where Celestia and the defenders staged a desperate last defense against Luna and the Nightmare Forces.(see the Celestia micro-series comic for details)

Something of note, Luna's betrayal against Celestia happened before she became Nightmare Moon http://i.imgur.com/LkZqttN.jpg If you take a look at the Reflections arc of the comics and 'The Journal Of The Two Sisters' book, you'll discover that both Celestia and Luna were very familiar with Starswirl and regularly spoke with him. He and Celestia were particularly close. Something else you might be able to add is that Starswirl was around somewhere right around Luna's rebellion/Nightmare Moon's banishment as mentioned in the Reflections arc. Celestia meets alternate Luna Luna mentions context for when that took place