He left most of his huge estate to his 1st cousin twice removed Archduke Franz Ferdinand of Austria , who subsequently used the title Archduke of Austria - Este .
Francis died at Vienna on 20 November 1875 .
Francis left most of Francis ' huge estate to his 1st cousin twice removed Archduke Franz Ferdinand of Austria , who subsequently used the title Archduke of Austria - Este .
Francis died at Vienna on 20 November 1875 .