Radium, in the form of radium chloride, was discovered by Marie Curie [1] and Pierre Curie in 1898 [2].
Polonium was discovered by Marie Curie and Pierre Curie in 1898 and was named after Marie Curie's homeland of Poland[3].
[1]: https://en.wikipedia.org/wiki/Marie_Curie?
[2]: https://en.wikipedia.org/wiki/Radium?
[3]: https://en.wikipedia.org/wiki/Polonium?