The head of the family or household
Latin, literally ‘father of the family’.
“Grace should be read by the paterfamilias of the family.”
Nothingburger (noun) (Chiefly US)
A person or thing of no importance, value, or substance. Now esp.: something which, contrary to expectations, turns out to be insignificant or unremarkable.
1950s: from nothing and burger. Added to the OED October 2018.