Sean M. Gagen of Southold died July 9, 2026, at Stony Brook Hospital. He was 51 years old.
He was passionate about plants and animals, as well as music, movies, comedy and politics. He worked as a bartender in New Suffolk and Venice Beach and also worked at nurseries in Santa Monica and Southold. He traveled to Edinburgh, Israel and Egypt, as well as to New Orleans, Florida, New York City and Los Angeles, and took cross-country road trips. He enjoyed beach volleyball, bodysurfing and attending live music shows.
He is survived by his parents, Denise and Mark; his sisters, Sheila, Michelle, Christine and Kerry; his brothers-in-law, Chris and Dan; and his nieces and nephews, Rita, Charlie, Francis, Fiona and Timothy.
The family will receive friends Tuesday, July 14, from 3 to 7 p.m. at DeFriest-Grattan Funeral Home in Southold. The liturgy of Christian burial will be celebrated Wednesday, July 15, at 11 a.m. at St. Patrick’s R.C. Church in Southold, officiated by Father Abraham Thannickal.
In lieu of flowers, donations to the Nature Conservancy would be appreciated. Envelopes will be available at the funeral home.
