Hello!
Thank you, everyone, for all the information. I was able to purchase the marriage certificate from GRO and have more information.
Elizabeth's parents are Alexander Thompson and Sussanah Briscoe and so, yes, one of Robert's children was named after the maternal grandmother. I have also found Robert's parents who were George Campbell and Anne McIntosh of Bonar Bridge, Scotland.
I am now going to try and find Robert's death certificate! The parish extractions do not contain much information though. Wish me luck!
Thank you again.
Regards,
Suzanne