Simplify the following text for a Grade 7 native English-speaking person.
Original: In the summer of 1977 , Rinpoche 's London center , known as Dzogchen Orgyen ChÃ ling , found a home at Princess Road in Kilburn .
Simplified: In the summer of 1977 , he started a center in London , which he called Dzogchen Orgyen ChÃ ling .