- The famous Chateau Marmont in Los Angeles is located on the corners of Sunset Blvd and Marmont Lane. Marmont Lane was named after Percy.
- Marmont died in London at the age of 94 in 1977. His wife outlived him by eight years, dying at the age of 100.
- When the British-born Marmont and his wife came to the States, they settled in Whitestone, Long Island.
- Father: Cecil Joseph Marmont; Mother: Emily Charlotte Wyatt.
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