Simplify the following text for a Grade 10 native English-speaking person.
Original: Snorri Sturluson ( 1178 -- September 23 , 1241 ) was an Icelandic historian , poet and politician .
Simplified: Snorri Sturluson ( 1179 â `` 23 September 1241 ) was an Icelandic historian , poet , and politician .