You're welcome, Heather. It filled a few hours of a grey, rainy day for one confined to barracks waiting for the Covid vaccination to come my way.
The Trotter's do seem to be an interesting family and I'm posting the entry from Burkes Family Records, compiled in 1897, where you (and anybody else interested in the family) can see the development from Robert, the father of the three Dr Trotter(s). It's Robert who is the subject of the main entry and as spouse names and children's names are entered there are lots of ways forward for research.
Burkes records the geneology of the junior houses of British nobility so Robert wasn't just your ordinary, every-day kind of guy and as you can see (bottom of page) the family had its own coat of arms.