Some years ago you saw a photo taken at a funeral of a prominent woman Citronella Candles were near her casket what does this mean?

Most likely that the funeral was either outside or at least open to the out of doors. Citronella candles repel mosquitoes, the guest at the funeral would have been made more comfortable by this. Citronella is also a strong smelling (but not unpleasant) herb, something else the guest would have been pleased for.