Baird's manual never failed me yet
Here's a list of social fraternities that existed at Trinity College along with their founding dates at the college:
Delta Psi - 1850
Alpha Delta Phi - 1877
Delta Kappa Epsilon - 1879
Psi Upsilon - 1880
Alpha Chi Rho - 1895
Delta Phi - 1917
Sigma Nu - 1918
Theta Xi - 1949
Pi Kappa Alpha - 1953
Phi Kappa Psi - 1956
Q.E.D.* - 1960
An asterisk designates a local organization. Checked the book, couldn't find diddly squat on Q.E.D., hope he's not from that one!
Hope that helps!
RUgreek