Hood became deeply influenced by the book Ireland, its Scenery, Character etc., 1842 by Mr and Mrs S.C. Hall, and began afterwards to learn the Irish language from Eugene O'Growney's Simple Lessons in Irish series, changing his name to Tarlach Ó hUid and joining the London branch of Conradh na Gaeilge three years later.

Under Ó hUid's editorship the publication took a staunchly pro-German, racist and anti-semitic line, claiming IRA involvement in German bombings of British cities, accusing the arrival of war refugees of putting Irish people out of work, praising German ethnic cleansing of Jews and alleging that Éamon de Valera's government was dominated by Jews and Freemasons.

By 1943, Ó hUid had grown disillusioned with the IRA following the Stephen Hayes fiasco and intended to resign, but refused to declare to the authorities that he would no longer be associated with Irish republicans.

[3] Ó hUid devoted much of his life after his release to literature, writing a collection of short stories entitled Taobh thall den teorainn in 1950, An dá thrá in 1952, two children's adventure stories entitled Eachtra Nollag in 1960 and Éalú in 1961, Adios in 1975, and a collection of poems, Rachtanna feirge, bróin agus grá in 1978.

Additionally he wrote also two autobiographies of his life until 1945, Ar Thóir mo Shealbha in 1960 and Faoi Ghlas in 1985, the former sparking controversy as Ó hUid condemned the IRA and apologised for having been a member of the organisation.