That house is breathtaking! I googled John Julian Wilkins, the second owner of the house, and found some interesting information about the house and his family.
Google Books link about the house. A couple other Greek houses are featured in this preview as well.
Looks like the man's grandson and his wife were members of
Chi Phi and president of the Interfraternity Council and
Kappa Kappa Gamma president, respectively. I'm sure they'd have been thrilled to know the house will host a sorority.