my mom's side, because my dad's side doesn't count:

• tom ii (sandy)
  • andrea (brian)
    • jonathan
    • rob
  • jenny (bill)
    • andy
  • laura (mike)
  • maria
    • david (wife)
      • kids
    • jimmy (wife)
      • kids
    • i'm not sure who the other guy is (he has a wife)
      • kids
  • tom iii (jenifer)
    • joy
    • josie
• mary lou (bruce)
  • john (lisa)
  • lisa (cleve)
    • nick
  • paula (dennis)
    • brandon
    • ryan
• peg (jack)
  • nate
    • tom
  • matt (allison)
  • greg
• pat (debbie)
  • ross
  • elise
• elizabeth (george)
  • michael
  • rebecca
• my mom, polly
  • me
• kathy (wayne)

notes:

• strike indicates people who've died