Birth records for Kiel

[vienna]

I have recently found out that my G G Grandfather was born in Kiel Germany he emigrated to Wales in the late 1860s early 1870s and changed his name from Johann Christian Braeutigam to John Brodigan . I have his parents names as Christian Braeutigam and Dorothea Struck but I am struggling to find any records for them , I was wondering if anyone could recommend any websites with records for this area I could search .