Goggin  Goggin is a surname. The surname Goggin has several origins. In some cases it is a variant of the surname "Coogan", and derived from the Irish "Mac Cogadháin", meaning "son of "Cogadhán"". The Irish "Cogadhán" is diminutive form of "Cúchogaidh", derived from elements meaning "hound of war". In other cases, the surname Goggin is derived from the place name Cogan, which is in the diocese of Llandaff, in Glamorganshire, Wales. The earliest reference is to Emma de Cogan (possibly mother of Milo, Richard and Geoffrey), c.1138. The first of the family to arrive in Ireland was the famous Milo de Cogan who came to Ireland as Strongbow's right-hand man in the Anglo-Norman Invasion of 1169. The first arms for de Cogan were "Gules, 3 lozenges, argent" and their geometric design and colours indicate close relationships with the FitzGeralds and de Barrys. Near to Cogan village the de Sumeris (from Sommery near Dieppe) held land. Their proximity to the Norman court at Rouen and the de Cogans being part of the household of the Earl of Gloucester may hint to the same genesis. The coat of arms of the de Cogan family and its modern descendant Goggin, dates back to Miles de Cogan, one of the knights of Richard de Clare, 2nd Earl of Pembroke "Strongbow", around 1154AD. The Goggin and Cogan blazon of arms is: "Gules, three leaves argent". The variety of leaf is variously given as "oak", by Fox-Davies; (1902) "laurel" by Thomas Robson (The British Herald); "fig" by Rokewode, John Gage, History and Antiquities of Suffolk: Thingoe Hundred, 1838, pp. 218–9); "Aspen" by the Middlesex Heraldry Society The Goggin family crest is derived from that of Cogan". The motto associated with the Goggin and Cogan family heraldry is 'Non metuo' which translates to 'I do not fear'. For the Welsh origin for the Goggin family name, the motto is 'Constans fidei', which translates to 'Constant to Honour'.