Hello Gadget
No evidence that it is Helen's mother at all but when Jane was christened in London they were living in Henry Street/Road not sure. I also found a James Bolton who was late of John Street Adelphi a bankrupt Wine merchant in 1809.
The funny thing about this is that it was posted in the London Gazette but also posted in the Edinburgh Gazette?
Presumably he would have been in debtors prison but can't find any other info to prove or disprove.
Dumfries archives are checking the muster rolls for me but from all accounts there is no indexing for them and they are in yearly platoon order not regiments. So hopefully in the not so distant future they will get back to me.
I can't find any marriage or baptism for James Bolton and Elizabeth Storrie/Story/Storey or Stary but it said on the baptism that she was his spouse?

Totally confused
Eileen