Christine was born in 1898; Frances was alive from 1900-1972; Alice Marie Vouk was alive from 1903-1983; Valentine F. Vouk was alive from 1906- 1975; Florine was alive from 1917-1986. There were also another child you didn't mention which was Glady Catherine Vouk who was born in 1918.
I was wondering if you had any info on Felix's parent's John (Johann) Vouk and Antonia. I need to know Antonia's last name and both of their parents names if that is possible.