Does anyone out there know when the name Valade was changed to DeLaval. On my fathers birth certificate it has his last name as DeLaval, but it has Valade beside it in brackets. My father was born in Sydney, Nova Scotia. He had only one brother. My dad once told me that his grandfather came from France and their name was changed when they came to Canada. I am not sure how to search for this, Can anyone give me some idea's.
Thanks in advance