He wrote it in 1907.
Peadar
as Gaeilge
It's already written in Irish.
In the Irish language: Ó Duibhir
Rinne mé.
Seán
fírinne
SibealÉilís
cúig
The Irish word for 'cake' is ciste [kishtih] or cáca [kawka].
Mo Bhanphrionsa Gaelach / Mo Bhanphrionsa Éireannach
with a pen and paper