54325 Main Road

PO Box 1

Southold, NY 11971








Prince Building:

54325 Main Rd., Southold NY 11971

Museum Complex:

55200 Main Rd., Southold NY 11971

Nautical Museum at Horton Point Lighthouse:
3575 Lighthouse Rd., Southold NY 11971

Prince Building Hours:

Society Office: Monday—Friday 10am-2pm
Gift Shop: Monday—Friday 10am-2pm

Archives: By Appointment


Treasure Exchange: 

April 1st through Mid-December    

Tues., Thurs., Fri., Sat., 10am–4pm

Wednesday 1-4pm


January through March             

Saturdays only, 11 am–3 pm

©2019 Southold Historical Society

by Geoffrey K. Fleming


Authored by Geoffrey K. Fleming, founding board member of the Brecknock Hall Restoration Committee, readers will get an in-depth view into the mansion built by William Floyd’s son, David Gelston Floyd. “Though it may sound like a cliché, the story of David Gelston Floyd and Brecknock Hall is, for the most part, something right out of a fairy tale.” Includes shipping.

Brecknock Hall