英文名字中的O'是什么意思？

原来是苏格兰人和爱尔兰人姓氏的部分，意思是“的儿子／后代“还有 Mac＋姓 ； 。。。many surnames are derived from the occupation of the father or grandfather. Mac an Bhaird (son of the bard) translates as Ward, while the earliest form of O’Riordan, Ó Rioghbhardáin indicates the surnames owes it origins to the position of ‘royal bard’

http://www.hoganstand.com/general/Identity/lists/introduction.htm
http://www.heraldry.ws/info/article07.html
http://www.irishtimes.com/ancestor/magazine/surname/index.htm

中国西安
Xi'an China
看明白了吧?一个意思.可以看作是用来标注发音的.

在姓名里 音译为 奥
奥尼尔(Shaquille O'Neal
：奥沙利文（Ronnie O'Sullivan

翻译过来是“欧”“奥”之类。也是名字。奥尼