Hi Richard,
I know Rachel Yehuda is doing work in the area of intergenerational trauma also known as transgenerational trauma. There are epigenetic references to this subject, fyi.
Here are some search results to scroll through that might be helpful: http://bit.ly/12rSMWA
From PubMed (looks like there are a few full text articles, otherwise abstracts): http://1.usa.gov/WsbPfc
Also we have two videos on intergenerational trauma posted:
Intergenerational Trauma & Healing-Pt 1/3 (24 mins full)
The Ghost in Your Genes - BBC Horizon (50 mins) (Rachel Yehuda is in this video)
We also have a page on Historical trauma here: http://acesconnection.com/video/intergenerational-trauma-healing-pt-1of3
I hope some of this is helpful.