Sorry for the delay in responding – I missed this post somehow.
I would say yes.
The rules for ‘ance’ say to use the final-letter groupsign when the letters it represents follow a letter, a contraction, a modified letter or a ligatured letter unless other rules limit its use…I could not find any rules that limit its use. On page 123, there is an example of the name Frances – and the ‘ance’ is used there.
Cindi