House of Plessis Lords of La Chaise and Périgny Ancient arms
House of Plessis Lords of La Chaise, Périgny, La Perrine, Ouschamps and Savonnières
Cadet Branches
House of Plessis-La Perrine Lords of La Perrine and Ouschamps Issued from Charles du Plessis, 3rd son of Jean du Plessis, Lord of Périgny and La Perrine
House of Plessis-Périgny Lords of Périgny, Bertault and Sarcelles Issued from Pierre du Plessis, 5th son of Jean du Plessis, Lord of Périgny and La Perrine
House of Plessis-Liancourt Lords of Liancourt Counts of Beaumont-sur-Oise Marquises of Guercheville Issued from Guillaume, 7th son of Jean du Plessis, Lord of Périgny and La Perrine
House of Plessis-Savonnières Lords of Savonnières and La Buzelière Issued from Luculus, 2nd son of Jean du Plessis, Lord of La Perrine and Ouschamps Cadets of La Perrine branch
House of Plessis-Asnières Lords of Asnières, La Grange-Rouge and Bézieux Issued from Jean, 3rd son of Pierre du Plessis, Lord of Périgny Cadets of Périgny branch
Personal Arms
Roger du Plessis Lord of Lianoucrt Count of Beaumont and Duretal Marquis of Guercheville Duke of Rocheguyon