Have family members that immigrated from Lower Canada to the US in about 1850. His name was John Olden born in 1826. I don't know if we have any connection with your family, but Olden Township is only about 2 hours from the where they might have entered the US. His fathers name was Igmasse Olden according to John's death certificate. I have some information that there was a name change from something like Alare or Allarie to Olden. The Olden may have originated form Olden Hall or Olden Hill. May be a connection to the Olden Township, Ontario area ?