Does Derpy have a brother/sister?

[Senko 459]

I noticed her in the background in S5E20 chatting to another pony and there was a foal sitting on the ground next to her with very similar colouring so I'm wondering does anyone know if she has a younger brother/sister?

[Octavia Heartstrings 28,407]

I thought Dinky Doo was supposed to be her younger sister?

Edited July 27, 2018 by shyabetes3939

[Senko 459]

Ah she does have one thanks.

[Octavia Heartstrings 28,407]

2 minutes ago, shyabetes3939 said:

I thought Dinky Doo was supposed to be her younger sister?

That would also make Derpy and Amethyst Star sisters 

[Senko 459]

No reason they couldn't be.

[Props Valroa 26,043]

It's not outside of the realm of possibility.