Collin, From our travels in recent years to Italy & Sicily we observed many ornate timberframe roof trusses in churches converted from former Greek temples circa 1-99 AD. The age of the trussses seemed to average 400-700 years according to local "authorities" when asked. Hadrian was probably the most prolific Roman builder and many of his remaining structures have tf roof systems of unknown age. Have not tried (yet) to validate their input.
You may find a world of stuff by doing a search via Google.
Have fun