There were Treacys living in Tuam on Cortoonroe
http://www.census.nationalarchives.ie/pages/1911/Galway/Leva...If these are the Treacys you are looking for my ancestors Fahys and Quinns lived on same road.
Also find this site which may be of help
http://www.traceyclann.com/files/1892-1924%20Ellis%20Island%...Hopr this helps