I found the below pic in a Facebook post. I know the middle one is Kartikeya and right end one Lord Ganesha. But who is the God in the picture who is seated on the lap of Lord Shiva at the left end ?
It is Baba Balaknath.
I am enclosing His image.
You can read about Him here: https://en.wikipedia.org/wiki/Sidh_Bawa_Balak_Nath