Embarcadero rebadged Object Pascal as "the Delphi language" a really long time ago.
Some say it was to attempt to trademark the language by extending the trademark they already had (*), some say that Pascal had too many negative connotations with US IT managers.
(*) Sometimes you hear people suggesting it was anti-FPC or anti-Lazarus, but I think _if_ it is true, it was more about late 00s Java , .NET and mobile startups. Garden's Point etc.