Yes, the googlefonts version is an import from the ttf and is probably in violation of the license because they have not kept the reserved font name.
- Bug#1128206: cardo: no source available Bastian Germann
- Bug#1128206: cardo: no source available Timothy N. Gaskell
- Bug#1128206: cardo: no source available Bastian Germann
- Bug#1128206: cardo: no source available Nathan Willis
- Bug#1128206: cardo: no source available Nathan Willis
- Bug#1128206: cardo: no source available Bastian Germann

