Thomas Williamson is my 3x great grandfather and John is my my 2nd great grandfather. I believe that John and his wife Louisa imigrated at some time between his marriage in Oct 1853 and the birth of his eldest son in Jan 1855 possibly on the Mary Stoddard in April 1854.
This is the only possible match that I have been able to find. is for the Mary Stodard. The entry reads as follows: WILLIAMSON ---- MR A WILLIAMSON ---- MRS A It appears that they were travelling with no children and were both over 21. There is no Louisa listed on the incoming passenger list at all in either the assisted or unassisted passenger lists for incoming shipping to Victoria in the 1853 to Jan 1855 tiem period. It would be wonderful to link up with another researcher for this line. Cheers Sandra