These are the oldest and youngest children of Twilight Sparkle and Lemon Hearts.
 
Original Here  
By: Glamgoria-Morose on DeviantArt
 
Older right  
Name: Lunar Gleam  
Age: 15  
Species: Alicorn  
Family: Twilight Sparkle, Lemon Hearts (Mothers), Starry Twinkle (Younger Sister), Lilac Glow (Younger Sister), Sunlight Sprout (Younger Sister), Silver Breeze (Younger Brother), Night Light (Grandfather), Twilight Velvet (Grandmother), Shining Armor (Uncle), Cadence (Aunt), Flurry Heart (Cousin)
 
Lunar like Twilight is very studious. Being the oldest of her siblings she’s become a role model for the four she helps other ponies with studies and hopes to be a teacher. (Need help thinking of a Cutie Mark)
 
Base Used  
By: FlutterBases on DeviantArt
 
Baby left  
Name: Silver Breeze  
Age: 10 months  
Species: Pegasus  
Family: Twilight Sparkle, Lemon Hearts (Mothers), Lunar Gleam (Older Sister), Starry Twinkle (Older Sister), Lilac Glow (Older Sister), Sunlight Sprout (Older Sister), Night Light (Grandfather), Twilight Velvet (Grandmother), Shining Armor (Uncle), Cadence (Aunt), Flurry Heart (Cousin)
 
Silver is the youest child and a very happy and playful baby. Although being only 10 months old he still hasn’t fully shaped his personality he only knows ponies he’s usually around and doesn’t remember random ponies who try and play with him.
 
Base Used  
By: monkeystar290 on DeviantArt