Reading Nash Buckingham's Bloodline, questions...

[King Cobb]

I am currently reading Bloodlines after reading Mark Right and Shootingest Gentlman, and it is my favorite book so far.

Halfway through it though and 3 questions I have:

1) Why did Nash leave the Beaver Dam Club? He talks about it so fondly and than seems to leave it for another club? Not sure if this is known or not but curious.

2) How did Nash's parents die? In some minutes he records from Beaver Dam, Horace writes him about sadness at the death of his parents. Turns out they died on the same day in 1919, but I have not been able to discover cause of death....

3) A very interesting character Nash introduces is Major Winthorne M Woolard who served in the Confederate Army, but dies while on a visit to England. As Nash Talks about him he makes a big deal of what the M stands for but not revealing it until later. Turns out the M is for Marlborough. From the way it is written into the story I am assuming this is some tie to the Royal Family in England, but I am not certain of that. There is definitly a significance to the middle name being Marlborough though. Nash reveals it like the end of a Paul Harvey Rest of the Story. Any insite?