I think that if you recheck your information, and not take the word of somebody else, you will find that the George Parlee that you are talking about is NOT the George Z. Parlee that was married to Eunice, and prior to that her sister Elizabeth Ann Foster.
George Z. Parlee married Elizabeth Foster in 1855. George Z. Parlee was born in 1830 and Elizabeth Foster was born in 1835. It would be hard to marry someone when the male is only 8 years of age, if what you say is true as the George Parlee that you are talking about was born in 1847.
Furthermore George Z. Parlee married Elizabeth Foster's sister Eunice Foster in 1861. Eunice was born in 1830. So, this would make George Z. Parlee at most 14 years of age for his second marriage.
I think that your information is right for a George Parlee being born to John Parlee in 1847, but he is certainly NOT the George Z. Parlee that I am looking for.
The information that I have from John Elliott makes more sense. George Z. Parlee was born 14 March 1830 to Rebecca Parlee. Rebecca is a great-great-aunt of John Elliott, and he has done extensive research on the Parlee Family genealogy. He has never been able to discover who the father happened to be. It is something that will probably never be discovered.
Anyway, thank you for replying to my message. The more people that provide information in genealogical matters the closer to the real truth we can get.