Simplify the following text for a Grade 5 native English-speaking person.
Original: The RCO was founded as the College of Organists in 1864 by Richard Limpus , the organist of St Michael , Cornhill in the City of London , and received its Royal Charter in 1893 .
Simplified: When the RCO started in 1864 by Richard Limpus it was called the College of Organists . It was given a Royal Charter in 1893 .