Antonin Dvorak's (Czech comprosser) Children?

I am new to this, and I'm just looking for a little help.I am looking for the names of Antonin Dvorak's Children.My great grandmother was named Alice Kubitza, her maiden name was Dvorak.There was a claimed connection to the famous Czech composser of the same Surname, something like he was my Great grandmothers grandfather, or something like that.She was 100% Czech, and spent the majority of her life living in and around Staples MN which is just outside of Brainerd MN.Thank you for any help.

Seth Peterson