Tom, Thanks for your posting. We have no information on the parents or national origin of our Catherine Hill. The information we do have indicates that she was born 06 Feb, 1816 in Marysburg. She joined the Methodist faith in 1834. Her marriage banns to Thomas Keeler were posted in Picton in 1836. The family moved to the U.S. in 1865.
Judging by her birth date she could have been a sister to your Joseph Hill. Do you have any information to indicate that fact?
We know that Catherine Hill was a name frequently used when Native American females were baptized into the Methodist religion. If she is part of your family, than she probably was "not" Native American by birth.