the name is for the dukes of devonshire, holders of a peerage and members of a wealthy aristocratic family related to the cavendishes. in areas where they held land, as at chatsworth, derbyshire and in chiswick, there are often both cavendish arms and devonshire arms pubs and street names preserving the names of both families, while at chatsworth the pub name "the snake" refers to the family's coat of arms. the snake inn, a coaching inn on the old turnpike road on the snake pass in the peak district of derbyshire, similarly gets its name from the devonshire emblem.