Had he been doing any exercise before he died?
Welcome Prof the answer is No

 

Did he die because of the environment? The environment being "garden on a sunny Saturday afternoon" No

Did he see something that caused his heart attack? No

Riddles are very interesting... Welcome haml3t

does the answer to this riddle involves the numbers 69,11 and 13? No but what an intriguing thought
cambridge got to do with anything? Not really
were the grandsons with Mr Lester on Sunday afternoon? yes

Does the time span between the death and when they accidentally found out have anything to do with it? No

Does the fact that they accidentally found out have anything to do with it? Again No

Welcome mtngoat

did Ben and Xavier sat on a chair with Mr Lester in the garden on a sunny Saturday afternoon? No

"A few weeks after the funerals",....was there another funeral besides Mr Lester? No
is so, perhaps the grandsons told Mr Lester that grandma has died and Mr Lester died of a heart attack!! No
or maybe the funerals...is for the 3 of them..Mr Lester, Ben and Xavier No

still no idea how the parents found out....maybe a photo? Yes
There was only one funeral the "funerals was a typo that I missed

argh - that threw me completely! Sorry blame Zacharie for bad typing and me for missing it

are the names and ages of the grandchildren something to do with his death? No

were they pictured in the paper? No, there is no paper involved

was the cause of lester's heart attack the realisation of something he saw in the paper? (basically shock)? see above

Did the picture have in it any of the following?:
Ben and Xavier 50% yes
Mr. Lester yes
Mr. Lester's wife No
Ben and Xavier's parents No
The numbers 11, 13, or 69? No

Did the picture have in it any of the following?:
Ben No
Xavier Yes
Ben and Mr. Lester No
Xavier and Mr. Lester yes


Did the picture show one of the grandchildren hurting Mr. Lester? No

Anything else? Today? No, nothing else OK just as well it is time for my breakfast Oh, Well, sorry for bothering

i've got a feeling that the answer is going to be frustratingly simple.....

No travelin man is frustratingly simple ,this is just frustratingly easy

Mr Lester was so happy to see his grandsons on that sunny afternoon.
Ben was playing with his new toy and trying to take a photo of Xavier, however Xavier almost had a fall, this shocked Mr Lester in his seat. This cause Mr Lester to have a heart attack and he fell back to his chair.
That was how the parents found out the death of Mr Lester (by accident)
Mr Lester was captured in the photo, leaping out from his chair.

Riddle Solved!! No, but nice try haml3t

Was Xavier the cause of Mr. Lester's heart attack? yes

Did Xavier have any physical contact with Mr. Lester that caused Mr. Lester's heart attack? No
Did Xavier say something that caused Mr. Lester's heart attack? No
Did Xavier shock Mr. Lester in any way? Yes
Did Ben do anything to cause Mr. Lester's heart attack? No

Is Xavier a really naughty boy? Oh Yes
Did Mr Lester like Ben more? No
Did Ben showed Mr Lester something?No

Interesting riddle Welcome blogmaw

Did Xavier show anything to Mr Lester that might have caused the heart attack? No
Did he mean to kill Mr Lester? No
Are the name of the characters relevant? No