Looking for Bozak

Hi My grandfather was named George William Bozak.He came to Canada around the early 1800's he served in the Canadian Army in world war 1.He originaly came from Austria.His birthday was Nov 22, 1897.Would like to know if there are any others that also came to Canada.My understanding is that his father came to Canada and was bringing the children over one at a time, but took ill and went back to Austria, leaving my grandfather here.What I am not sure of is if any others came over before great grandfather went back.I am also unsure of the locale of George Bozak's birth.Only Austria.Thank you ever so much if you could help me.