Which beloved royal family member is assassinated in the first episode of season 4?

Sadly, this horrific event is a historical fact. Lord Louis Mountbatten, Dickie to the family, was the uncle of Prince Philip, grandson of Queen Victoria, and, most importantly, surrogate father to both Philip and Charles. His assassination was the first in the IRA's long terrorist campaign to drive the British out of Northern Ireland.

Asked by Susanna Henke · Last updated 5 years ago · 20.6K views · SOURCE