G'day Mark,
I was born in the Livno region in the 60's and emigrated to Australia with my parents. I too am tracing my family history in that region and have found Facebook to be very useful in getting information (from distant relatives). I do know that there are quite a few Dolić families in Livno and surrounding villages.
Luckily I am still fluent in Croatian (Bosnian) so if I can be of any assistance just let me know. Good luck & God bless!
Zak Peric