Toni, welcome to G2G forum.
Here is the help page on "Merging"
Any other doubt you might have G2G forum is the right place to come !
Best of luck.
The duplicate profiles need to be merged. Move down to the bottom of the Williams-41115 profile (public page) to see "Matches and Merges". Then click on "Intiate a merge" in the lower left, and follow the instructions on the page that comes up. You will want to propose a merge with Williams-30196
You'll also need to merge the duplicate profiles for the mother. Merge Alston-403 with Alston-139.