Gchq and my granddad's suspected assassination

Hi, sorry for a random title..I have no one to talk to about this. but I always suspected this growing up. My dad, who I'm rarely in contact with, texted me that he found out his father (who worked for GCHQ) had multiple autopsies done when he died of a heart attack. Gchq requested three or four because they suspected foul play. This side of the family is very fragmented. I feel like I'm left picking up the pieces and I have no one to talk to about it. The layer of GCHQ spy work just adds to the weirdness of it. Of course it spikes interest in my conspiracy brain. Other things he told me were that his father was high up (only one person above him) so who knows what he knew? Working on military bases etc. One was called staxton wold in Yorkshire. He also worked in Cyprus and Malta. Him and my grandmother had some important dinner and the head of the CIA was there, this was in Hong Kong during the cold war. Which makes me wonder what my nana may have known..? I have other small pieces of info but it's not much. I don't really know what gchq do. They had a masonic lodge frequented by gchq spies called mercurius lodge. It was involved in a scandal due to a high level member being a paedophile. I have no idea if my grandad was a mason or not. I went to Yorkshire last year and accidentally booked a guest house attached to a masonic hall. Had some very crazy dreams there ! Anyway sorry if this is a random post but if anyone wants to talk that would be cool.. or have helpful info. Thanks.