How do you stop notifications of an anniversary or birthday when the person is dead or divorced??
The person needs to be marked as deceased on Geni.
You can either:
1) Mark the profile deceased yourself by following the directions at https://help.geni.com/hc/en-us/articles/229706547-How-do-I-report-a...
2) Link to the profile here so we can help do it for you.