If I do it the way you suggest, then the format of the life dates for a dead person with an unknown year of death look the same as the format for people who are still alive (i.e. only a "birth" year is provided). I want people reading the family tree to know who is alive and who is dead. In other words, if I don't know the year of the person's death, I want to still be able to indicate they're dead. Thoughts?