It may not mean anything but for whatever reason I looked at Wikipedia about Maddy and saw this:
Madelyn Dunham - Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Madelyn_Dunham
Wikipedia
Known for, Maternal grandmother of Barack Obama. Religion ... Despite her strict upbringing, she liked to go to Wichita, Kansas to see big band concerts. ... In his book, Obama described his grandmother as “quiet yet firm”, in contrast to Obama’s “boisterous” ..... This page was last modified on 24 September 2015, at 05:13.
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Now why would someone “modify” this on 9-24-15 and what was modified? I thought it was strange.