It looks like these two profiles represent the same person and should be merged. The reason they look like half brothers is because the profiles which represent the fathers are actually duplicates and should be merged as well. I've proposed the merge for the profiles of the father and after that the same can be done with the two different profiles of George and the half-brother.
If you go to the profile of the father. Scroll down to the bottom left of the page and you will see a merge which has been proposed. Click compare and when you agree, click merge. That will give your approval for the merge and the profile manager for the other profile will need to do the same thing. Worst case scenario is it will take 30 days if the other profile manager takes no action.
In the meantime, you can still add information to the profile if you like and when the merge happens the added information will still be there as part of the information in the new profile.
Best of luck!