Landry, Burke, and Myatt Family Chart: Halifax Explosion

Inspired by conversations with my editor,  Sylvia Clark,   I’ve created a chart  to make it easier for  readers to visualize the families that I’m writing about in a memoir called "A Picture on the Wall.". 

Along with the above chart, I was wondering if information included in the Legend below might be helpful. 

What do you think?  Should I include it?  Vote "yes" or "no" and/or comment in the section below or on Facebook.