Elizabeth Francis

Can anyone find a marriage record and/or baptismal record for Elizabeth Francis possibly nee Campbell, born about 1827 in Ireland. We think she belonged to the Church of Ireland. She visited Robert Campbell my great great grandfather in Hamilton, Ontario, Canada in 1861, according to the Census. At that time she was aged 34. I'm wondering if there is a family connection. The 1851 Census showed a William Francis aged 7, visited Robert. We are assuming that WIlliam was Elizabeth's son and Robert's nephew. Can you confirm?

Thank you,

Jane Campbell