Computers do not always accept the apostrophe in some names and therefore names are being recorded in a rather misleading way. Ex: O'Sullivan reads as o Sullivan - leaving one to think the "o" is a middle name. However if you went to www.canada411.com and entered a search for O'Brien in Toronto you would find a variety with and without the apostrophe. My surname has an apostrophe which shows on one bank card but not on others, nor does it show on my driver licence but does show on passport and medical records. So I guess the question is: who determines whether your name should or should not be recorded as on your birth/marriage certificate? Cheers!