They named them similarly, with -us at the end of their name. I think they might be related. The last name spelling differences could just be there to throw us off.
Is he Magnus' brother?

both have 2 eyes, 2 ears, 1 nose, 1 mouth. remarkable! they must be related!
Yeah, in the eyes of a bunny, they could be related, so you are excused, I will still vote you president!

both have 2 eyes, 2 ears, 1 nose, 1 mouth. remarkable! they must be related!
Yeah, in the eyes of a bunny, they could be related, so you are excused, I will still vote you president!
dear sir, your loyalty brings tears to my eyes.

No, I am just speaking it as it is homey.
Homey, that's hilarious, I'm still laughing! I don't think so!

Further proof below.
"Norwegian being his mother tongue, he is able to understand Swedish and Danish, which are mutually intelligible languages." - https://www.quora.com/What-languages-can-Magnus-Carlsen-speak-How-is-his-English-so-good

Pontus Carlsson is of Colombian origin, and was adopted by the president of the Swedish Chess Federation when he was some 14 months old.

Pontus Carlsson is of Colombian origin, and was adopted by the president of the Swedish Chess Federation when he was some 14 months old.
So you are saying Magnus was adopted?

Pontus Carlsson is of Colombian origin, and was adopted by the president of the Swedish Chess Federation when he was some 14 months old.
So you are saying Magnus was adopted?

Pontus:ancient Greek god of sea.
Norway has coast, therefore it is in "contact" with Pontus, the sea.
Magnus was born in Norway
I think it's legit.

I suspect that the ideas that Sweden and Norway are two different countries, and that Carlsen and Carlsson are two different names are both much to complex for the average forum dweller
Your thinking is exactly how others thought before Obama was elected. But now we know he has siblings too!!!
IT'S NEVER TOO LATE TO QUESTION!!!
This guy is Pontus Carlsen. Is he Magnus' brother from another mother?