Famous Rebecca Pearson Death Age References. Web this is us has been preparing viewers for rebecca pearson's death for a while and the moment finally came to pass in the show's penultimate episode. The character passed away after a long battle with alzheimer's.

The character passed away after a long battle with alzheimer's. Web it's possible that rebecca's state is simply due to old age, but hints of her potentially suffering dementia have been peppered throughout this season. Web the nbc drama introduced viewers to jack pearson ( milo ventimiglia ), rebecca pearson ( mandy moore ), kevin pearson ( justin hartley ), kate pearson (.