you guys serious? did he get married and his wife put the foot down or something! put some pants on brian! lol just kidding.
When Brian was born his Mum and Dad were not married, and they wrote his mother's last name on the birth certificate(Harris). When he was about 8 or 9 his parents got married and he had the chance to change his name to his fathers then but for some reason they didn't.
Anyway, about 3 months ago Brian had a child of his own and he wanted the kid to have his fathers name(Lake). So it was easier for him to just change his name to Lake as well.
(Brian Lake won the bulldogs b&f last year, and i'm still astounded how many people haven't picked up the name change thing yet. It made hardly a ripple on bigfooty. Had another b&f winner from another club changed there name it would have been back page news and a 40 page thread on bigfooty)