George M. Cohan...another great Irish-American! Here's his picture and song list, and also a short bio:

Picture and song list:
http://www.melodylane.net/standards4.html


HARRIGAN

H-A-Double RI-G-A-N spells Harrigan!
Proud of all the Irish blood that's in me.
Divil a man can say a word agin me!
Oh, H-A-Double RI-G-A-N you see!
It's a name that a shame never has been connected with
Harrigan, that's me!


-George M. Cohan

Bio:
http://www.hollywood.com/celebs/bio/celeb/347974