Could this be his birth registration? Note the surname.
George Collinson March 1874 reg district Hastings vol 2b page 37
George Collison and Charlotte Matilda J Jenner marriage FreeBMD
Sept 1/4 1899 Reg district Cranbrook (which includes Goudhurst) vol 2a page 1691
If all else fails then buying the marriage cert will give you the name of George's father.
I can't find him as yet prior to 1901. Maybe following his grandmother matilda Blackman back through the censuses would give a clue.
I presume I have the correct George Collison?
