The Rohrabacher family moved to North America fromGermany in 1710.The father of the family was named JOHANNES ROHRBACH.Both of the parents died in 1710 and all but one of the children ended up living with or near the Robert Livingston family on the Hudson River, Columbia County, NY.One child was adopted/endentured by a family in NYC.
For the next four generations the family name was Roorbach, Rohrabach, Rorabach, etc..
Sometime around 1820-1836 two of the brothers added an ER on the end of their name and became Rohrabacher or Rorabacher.As far as I can tell every RohrabachER or RorabachER appears to be related to one of these brothers.
Around 1836 the family moved from the Hudson River area to Virgil, Cortland Co., NY in central NY State.
Both of the Rohrabacher brothers (John Conrad and Frederick) moved their families to Michigan between 1836-1847.
Your name sounds like a possible way to spell the family name.If you give me some of the details on your ancestors, I could look to see if I have a match.The spelling would be different, but if I can find the same first name, born around the same time in the same location, we may have something.