How does Sam Know?

[Kent2010]

Originally Posted by Nerwen

2. Sam does say:

"You want to know why your brother died? He tried to take the Ring from Frodo!"

But that scene is when Faramir is taking Frodo and Sam to Osgiliath. At that point the hobbits learned (through Faramir) that Boromir was dead. My guess is it was one of Sam's last ditch efforts to have Faramir let them go...Faramir is taking them to Osgiliath, claiming the Ring for Gondor, so Sam might as well try and say Boromir died because he went mad and tried to take the Ring because Sam's entire line is...

"You want to know why your brother died? He tried to take the Ring from Frodo! After swearing an oath to protect him. He tried to kill him! The Ring drove your brother mad."