A
JOKE!
Basically I just did it to do it. I don’t really ship any of these except Shining and Twilight, but that’s very loosely shipped.
I was inspired by an adopt where Rainbow Dash was being shipped with Rainbow Blaze (frost? beam? idk) so this popped up in my head.
Don’t take it seriously.
And since we don’t have any relatives of Fluttershy, she’s not in this. ;C
Only after I drew all of this did I come up with a backstory.
In a nutshell, Equestria is under a sort of curse/genetic mutation that causes any union of those outside the bloodline to miscarry. With the little knowledge they have of science, genetics and viruses, the ponies eventually blame magic rather than the obvious. Inbreeding among ponies was uncommon but not unheard of, which gave them hope for breeding. Many ponies resisted at first, but eventually some wished to have children and seeked their family for help. Some married into their family, others simply asked for help from those who could carry their child to term before raising it themselves.
Only close to semi-close family could copulate before miscarrying. Only first cousins could bear children, along with mother and son, father and daughter, grandson and grandmother, granddaughter and grandfather, uncle and niece, nephew and niece, etc.
Now, onto the families: