Yes, March 14 1870.
As an aside, the TCU grad in me had to snort at the following comment on Wiki: "Theta was the first women's Greek organization established at four Ivy League schools (Cornell, Princeton, Yale, and Harvard), as well as Michigan, Vanderbilt, Baylor, and Stanford universities."
Ha, which of these is not like the others?!? With apologies to our EE sisters, that just truly made me chuckle.