Yes. Having 4 names are quite common in Portugal, specially in certain areas. The names are usually structured like this: G1 G2 FM FF

G1 and G2 are given names. Usually 2 "first names" that you see in english, but there's common combos and sometimes there's a word joining them. Examples: "Maria Jesus" vs "Maria de Jesus". Some names are more common to be put first, but almost every name can be put in any order, example: "José António" vs "António José".

FM and FF are easy. FF is the family name of your father (your father's FF), and FM is the family name from your mother (your mother's FF).

Where I was raised 99% of my friends had 4 names structured like this, I only knew a few that didn't. When I moved to Lisbon the 3 name structure was much more common, dropping the second given name.

In Portugal there's rules for naming your kids (at least there were when I lived there), but I think in Brazil such rules don't exist. The author is brazillian but his name seems to follow the traditional portuguese naming style, as you guessed his name in english could be translated to "Robert Anthony Smith of Almeida" (Almeida is a portuguese town).

Funny, when I saw "FM" and "FF" I interpreted it as "Family Male" and "Family Female." But Father and Mother are those characters gender swapped!

So what happens when father's or mother's last name is already in FF FM form?