Queen Natura, Mother

Fluttershy, Technically the 9th oldest but is now the 5th oldest?
Don't ask

Daylara, the 2nd oldest, Nightlara's Twin

Zipfire, technically the 5th oldest but now is the 4th oldest? Sunshine's twin

Sunshine, technically the 4th oldest but is now the 3rd oldest? Zipfire's twin

Chara, the 6th oldest

Moonlight, the youngest but adopted
Bio parents are unknown

Day, technocally the 7th oldest but is the 4th youngest. Night's twin

Night, technically the 8th oldest but is the 3rd youngest, Day's twin

Starfire, The 3rd oldest? Only son of Nightfire and Natura

Frisk, the 2nd youngest, the last born

King Nightfire, Father, oldest Child of the Fire Family, leader of the Unittien Gaurd

Kindfire, Aunt on father's side, child youngest of the Fire family, carries the fire family name.

Johnathan, Married to Kindfire, leader of the fire kingdom's guard

John, youngest child of Kindfire and Johnathan, trans (girl to boy), Emily's little bro

Emily, oldest of Kindfire and Jonathan, John's Older sister

Celestia, Second oldest, Sister of Natura and Luna, Sunriser (ish :3)

Luna, youngest sister of Natura and Celestia, riser of the moon (ish)

Nightlara, Oldest child of Natura and Nightfire, twin of Daylara