John McKenzie - John McKenzie

I found on family search a John McKenzie born 1842 had sisters Helen born 1838, Ann 1840 and Elsbet born 1844 all born at Inverness. Parents were William and Ann McKenzie nee Gordon. I have been searching for family of my Henry WIlliam McKenzie, who had same parents but no birth certificate. He came to Perth Western Australia, maybe on his way to NZ in 1894. His birth date much later. If you know more I would be pleased to hear. On his marriage certificate it states that his parents deceased by 1898. Diane