Grumpy Old Geeks Topics Genetic ancestry testing Topic Genetic ancestry testing 2 mentions in 1 episode The hosts question whether ancestry percentages from a genetic test match known family history. Mentions 225: A Beacon of Light and Hope Sep 4, 2017 1:14 I come back at 6.8% Italian. 3:32 I know the lineage of my family and I am more than 6.8% Italian.