Simplify the following text for a Grade 4 native English-speaking person.
Original: On February 28 , 1681 , Charles II granted a land charter to William Penn to repay a debt of Â # 16,000 ( around Â # 2,100,000 in 2008 , adjusting for retail inflation ) owed to William 's father , Admiral Penn . .
Simplified: In 1681 , Charles II of England , gave the land to William Penn . .