Calling a trans person by their former name is referred to as "deadnaming" and is considered highly offensive to most trans people I know.
Steven PetrowWhen someone transitions you should refer to them by their new name both in the present and with references back in time.
Steven PetrowWhat really surprised me was that more than half of all deaths by gunshot are suicides, more than 20,000 a year, about 58 a day.
Steven Petrow