Original: The Invitation to William was a letter sent by seven notable Englishmen , later named the Immortal Seven , to William III , Prince of Orange , received by him on 30 June 1688 ( Julian calendar , 10 July Gregorian calendar ) .
Simplified: They were later named the Immortal Seven . They sent this letter to William III , Prince of Orange , received by him on 30 June 1688 ( Julian calendar , 10 July Gregorian calendar ) .