She politickeyr as leighder Yernagh va John Aloysius Costello (Yernish: Seán Alabhaois Mac Coisdealbha; 20 Mean Souree 1891 — 5 Jerrey Geuree 1976). She coyrlagh v'eh lesh reiltys Steat Seyr Nerin lurg y teyrsnys eck, as lurg shen dirree eh myr Turneyr Theayagh Nerin veih 1926 derrey 1932. She Taoiseach ("Toshiagh") v'eh veih 1948 derrey 1951 as veih 1954 derrey 1957.

John A. Costello

Taoiseach
Ayns oik
2 Mean Souree 1954 — 20 Mayrt 1957
Roie-immeeaght: Éamon de Valera
Eiyrtyssagh: Éamon de Valera
Ayns oik
18 Toshiaght Arree — 13 Mean Souree 1951
Roie-immeeaght: Éamon de Valera
Eiyrtyssagh: Éamon de Valera

Teachta Dála son Coontae Ghivlyn
Ayns oik
1933 — 1937

Teachta Dála son Baljyssyn Ghivlyn
Ayns oik
1937 — 1943
Ayns oik
1944 — 1948

Teachta Dála son Divlyn Hiar Yiass
Ayns oik
1948 — 1969
Oayllys persoonagh
Laa ruggyree 20 Mean Souree 1891(1891-06-20)
Boayl ruggyree Divlyn, Nerin
Laa baaish 5 Jerrey Geuree 1976 (84 bleeaney d'eash)
Boayl baaish Divlyn, Nerin
Partee Fine Gael
Gerrym Leighder
Sheshey Ida Mary O'Malley