Charm bracelet from ancestors...What does it mean?

Ok...a few years ago, my..grandma's nephew..(i think) sent me a charm bracelet, and he said in an attached note that it was ped on from my ancestors. I'm really interested in it, there is all of these different charms and it looks really cool. (it looks old too). I want to find out about my ancestors through this bracelet. Uhmm..heres some of the charms: -old fashioned wagon, two dice, bunch of others, and then theres this big four leaf clover. its the only one that has color. Its bright green and really pretty. So could that mean they came from Ireland? How can I find out more about what the charms mean? Help is greatly appreciated:)