I need just a bit more information in order to determine where we are connected.At the present time, it appears there are two distinct lines of Olberts in the US.I can't fit you in with the info you have given me.What is your gggrandfather's name?Where in Germany did he and his brothers come from? And where did they settle?
My gggrandfather George Michael came from Baden with his brothers Jakob and Peter about 1849 via Pennsylvania and settled in Wisconsin.There is another line of Olberts that came into the US from Baden, Germany about 1870.They settled in Illinois and most of the family then moved to Colorado. This line also has a Phillip married to a Maria Suzanne and their children were Phillip, Ludwig, Gustave, Heinrich, Lena, Thomas,Johannes, Georg, Elisabetta, Magdelena and Friedrich.This line is being researched by Don Olbert now in Arizona.
I know there are a number of Olberts in Pennsylvania. (they show up on the 1790 census there) but I have been unable to connect with any of the Pennsylvania Olberts.