The enumeration date is as you surmised the actual date the info was recorded. The official enumeration date was 1 June 1850, all questions were to refer to that date. So she probably died sometime between 1 June and Sept 11. Don.
Definition of plague. 1  an annoyance; those children are a damn plague. 2  any large scale calamity (especially when thought to be sent by God) 3  a swarm of insects that attack plants; a plague of grasshoppers. 4  any epidemic disease with a high death rate.
What is the bubonic plague? Bubonic plague is a type of bacterial infection which is quite deadly as it was able to take the lives of millions of people in only a short period of time. This is the deadliest and most common form of plague which targets the lymphatic system. The bacteria that cause the bubonic plague are also the ones responsible for the septicemic plague which targets the blood as well as the pneumonic plague which aims for the lungs. Bubonic Plague Causes