I have not seen the Hubbs name in any of my research on the Esher's. I have found one Elizabeth Esher in the 1830 Census. She would have been born around 1760-1770. I do know this about the Esher's which may help you.
Johann Conrad Escher sailed from Rotterdam on the Ship Chance and arrived in Phila in Sept. 1765. He remained in Phila. Johan Jacob Escher and Gabriel Esher (notice the different spelling in name) sailed on the same ship to Phila in 1768. I have copies of the passenger lists with all info. You must be a decendent of either Jacob or Gabriel. I know that Gabriel is listed in the 1810 Census as a resident of Hagerstown, MD. There is a Jacob U. Esher who is listed as fighting in the Battle of Gettysburg and is listed as living in MD.
I have not researched Johan Jacob Escher.
I do know that Johann Conrad Escher had three sons: George, William and Conrad. I have only traced George since he is my direct decendent. I do however, have many copies of the Census of 1810 and 1820. I will look to see if any of them have a daugher who is the age of Elizabeth and pass it along to you.
If you wish to contact me directly my e-mail address is: RCBtravel1@aol.com