Technically, Ron is the youngest child, but they are saying biologically, and then, my friend, he is the eldest son.
No, in that vein, he is the ONLY son of Nancy and RWR's union.
As the youngest child, to refer to him as the eldest son is incorrect.
Not according to my Senior Thesis...
let me see if I can explain. The two eldest were girls, so in the female realm, Maureen was the oldest and Patti the youngest, then... came Ronald Prescott, a boy, which makes him the firstborn boy/eldest son, but the youngest child. I've researched birth rights, temperments, etc, etc, the whole nine yards. Spent over a year doing research, we could argue all night, but even my husband knows better (when it comes to this subject) :)
hope that helps, I'd elaborate more, but then everyone would fall asleep, and well, we can't have that lol :)