This song was written by Iain MacGhill-Eathain from Mull. I learnt it from Christine Primrose in the Gaelic Song class at Sabhal Mòr Ostaig on the Isle of Skye in 2008.
Sèist
Mo rùn geal dìleas, dìleas, dìleas
Mo rùn geal dìleas nach till thu nall
Cha till mi fhèin riut, a ghaoi chan fhaod mi
'S ann tha mi ghaoil 'na mo laighe tinn
Is truagh nach robh mi an riochd na faoilinn
A shnàmhadh aotrom air bhàrr nan tonn
Is bheirinn sgrìobag don eilean Ileach
Far bheil an rìbhinn dh'fhàg m'inntinn trom
Thug mi mìos ann am fiabhras claoidhte
Gun dùil rium oidhche gum bithinn beò
B'e fàth mo smaointean a là 's a dh'oidhche
Gum faighinn faochadh is tu bhi 'm chòir.
Cha bhi mi strì ris a' chraoibh nach lùb leam
Ged chinneach ùbhlan air bhàrr gach gèig
Mo shoraidh slàn leat ma rinn thu m'fhàgail
Cha tàinig tràigh gun muir-làn na dhèidh
Chorus
My fair and faithful, faithful love
My fair and faithful love would that you returned to me
I will not return to you, love, I cannot
For I am lying here, my love, on my sick-bed
If only I could take the form of a seagull
Swminning lightly over the waves
I would make a journey to the Island of Islay
Where lives the girl who made my heart heavy
I spent a month stricken with a fever
Uncertain I should survive each night
The subject of my thoughts night and day
That I would recover and have you with me
I will not struggle with a tree that will not bend for me
Although there would be apples on every branch
Farewell forever of you have deserted me
There was never an ebbing tide without a full tide to follow
Other versions of this song
http://www.qlyrics.com/rankin_family/mo_run_geal_dileas/