No
No, Beowulf was not written in AD 838. It is estimated to have been written between the 8th and 11th centuries, with the exact date being uncertain. The earliest known manuscript dates back to around 1000 AD.
Hiraka Sutra
Beowulf was written in England.
Beowulf is thought to have been written between the 8th and 11th centuries (circa 700-1100 AD).
Grendel is a character in the Anglo-Saxon epic poem Beowulf, believed to be written between AD 700 and AD 1000, and is one of the three antagonists of the story.
Although the author of Beowulf is completely unknown, the manuscript describes historical events which took place at the end of the 5th century, while the Romans left Britain around 410 AD. It is impossible.
It is generally believed that the story had no Christian elements when it was first "composed" around 750 AD. But when it was written down for the first time around 1000 AD, it is thought that the monks who recorded it inserted their beliefs to convert listeners.
The author of the original 700 AD version is presumably Aldfrith. This original version was translated into a different dialect of Anglo-saxon in 900 AD by Cynewulf. The contemporate authors are Ashley Crownover (Wealtheow:Her telling of Beowulf), John Gardner (Grendel) and Edward Irving(a reading of Beowulf).
Margaret E. Goldsmith has written: 'The mode and meaning of 'Beowulf'' -- subject(s): Beowulf
Robert Thomas Farrell has written: 'Beowulf, Swedes and Geats' -- subject(s): Beowulf
The author of the Anglo-Saxon poem, Beowulf is unknown. The date it was written is between the 8th and 11th centuries, AD. The author was probably a Christian who observed court life (kings, dukes, earls, and so forth).