From left to right the photo is of Elliw, Sean, Osian and Mia.
Elliw and Mia are Osian's two cousins, Sean is their Uncle.
Typically there isn't a photo of the four of them looking, but this ones my favourite of all four of them.
Elliw was too busy playing with bubbles, Sean's smiling nicely, Osian's too busy trying to eat the block and Mia's smiling nicely but looking away.
This next photo is my favourite one of Osian, look at his big smile! But Elliw's not looking and Mia's not smiling in this one so I thought the first one would be nicer for the family photo.