Good Afternoon Mary Ellen,
I hope you do not mind my posting bits of information as thoughts occur to me.
I used to work with a circus. No, I was neither a clown nor a juggler but I am attempting to multitask by juggling with incoming and outgoing messages at the moment.
Did you notice on the site I mentioned the names of Jackson and Bryce (grocers and wine merchants), Jackson and Sidney (offices), and Jackson and Co (grocers). You referred to Robert Jackson, the father of Frances, being a Merchant. I am wondering whether Robert was involved with these businesses. Would you mind having a close look at the Christian names of members of the family from the present day back to the time of the marriage of Marcus and Frances? Look for any second given names that look like a surname. You may find nothing but I would be interested to know if a Bryce or a Sidney appear.
All the Best, Christopher