Hi Karyn.
I got my DNA from Ancestry two days ago, I messaged you there to let you know Sarah Knott was my grt Grandma I'm more than certain she is Charles' wife, and yes you're right about the different years for Charles birth but I think 1858 is correct, Sarah was actually born in 1870, her birth certificate names her as Jane Knott but on her baptism she was named as Sarah Jane those are also her mothers Christian names. I've been searching for Sarah for many months with the help of a dear friend, it's in the last two days through the genious of DNA and my friend that I've found her.
If you can contact me privately through Ancestry I have other private information and also some certificates to share with you.
Marilyn x