Seán Dublin Bay Rockall Loftus (1 November 1927 – 10 July 2010) was an Irish environmentalist, barrister and politician who drew attention to his campaign issues by changing his name.

[2] Besides his environmentalist views, Loftus subscribed to the label of Christian Democrat and was socially conservative, opposing moves by Taoiseach Garret FitzGerald to liberalise Irish laws around divorce, contraceptives, and abortion.

[3] His father was a doctor and Loftus attended medical school at University College Dublin but did not enjoy it, leaving before graduating.

While he lived in the United States, he was an active member of the Montclair, New Jersey branch of an Irish-American Catholic fraternal organisation, the Ancient Order of Hibernians (AOH).

Due to this influence, during the late 1950s Loftus flirted with the hard-right "National Action" organisation, a group that advocated for "vocationalism", the localised Irish term for corporatism.

Despite the motion having the support of larger political groups, such as Official Sinn Féin, the planned oil refinery was eventually rejected in 1976 thanks in part to Loftus bringing a bucket of polluted water from the bay to a public inquiry.

[6][9] Although not elected, he succeeded in highlighting the issue and the proposal was eventually turned down by the Minister for Local Government, James Tully.

The application was rejected in June 2010 by the planning board, An Bord Pleanála, while Loftus was in hospital, having undergone brain surgery.

Uí Lachtnáin also served several years as Chairperson of the Dublin City Community Forum and was a founding member of the Bull Island Action Group.

His funeral mass took place at St. Gabriel's Roman Catholic Church in Dollymount and he was interred at St. Fintan's Cemetery, Sutton on 12 July 2010.