Start with yourself and work your way backwards in the tree from you, your father, your father's siblings, your grandparents, their siblings, etc.
Then you can try to google search the names or a site like this type search on it for the name and see what it finds.
For instance, I have a Rosanna.She had 4 children: 1.Mary Ann Gainey 2.Lewis Gainey 3.Nancy Gainey 4.Unnamed Gainey
Mary Ann was born on July 20, 1843 in Chesterfield County, South Carolina.She died on March 19, 1908.She married a Philip James Hurst.He was born on January 22, 1840 in the same county and state as Mary Ann.He died February 14, 1912 in Arkansas.He was a farmer.They had 4 kids: 1.M.P. Hurst 2.Ella Hurst 3.Anna Rose Lee Hurst 4.Mary Jane Hurst
Also if you have any of the Hursts or Gaineys in your tree above please let me know info you do have on them.