As Declan said the Whelehan name originates from Westmeath. My maiden name is Whelehan. My father was Sean Whelehan, born in Derrymore (near Kinnegad, Westmeath. Youngest of six boys, Ted, Tommy, Paddy, Mike, Lawrence and my dad. My uncle Ted is the only surviving brother and actually lives in Victoria, Australia. He may know the Whelehan's you are looking for. I will be talking to him for his 80th birthday next month and will ask if he knows anything.
Sinead emailing from Canada (originally from Co.Armagh)