Hallinan Clan in San Fran

I'm looking for information on my adoptive family, the infamous Hallinans.I know pretty much the basics, who my grandparents are, Vivian and Vincent and who my uncles are.I don't know much else.One of my uncles has done a whole family tree, but I'd really like to do my own, on my own.If you have any information on my family, either direct descendents or distant relatives or whatever, I'd really, really appreciate it.I've been looking high and low online and keep hitting dead ends, I'm pretty sure Vin had at least one or two siblings, but I can't find any record of them.Please help me out if you can.Thanks a lot.
Emily Hallinan