Every genealogist knows that everything in the Family Trees uploaded to Ancestry.com is undeniably true.
So it's a fact: Lucille Ball married her grandson
Since you have to have an account on Ancestry to view the page, I have converted it to graphic form. Apparently Desi is related to a whole bunch of people -- I only show the first of six pages below. They are all undeniably true.
Ignore the warning box Ancestry includes in the upper right.