This is often how I've found you index the names according to the project instructions, if you want to share the batch we'd be able to see the same batch and the project instructions, but I think without seeing it you are correct that it would be indexed as Harries Jeffreys. This helps with searching when the indexing is published.
If you don't find something specific in the project instructions the general guidelines state:
• Do not assume the surname of an individual based on the surname of someone else, such as a parent or a spouse, unless directed otherwise in the project instructions.
• Type the maiden name before the current or former surnames. A maiden name was often indicated by the words “née” or “born as.” A maiden name may also have been written in parentheses.
Hope this helps
Hi, What you would do and how you would index this depends a lot of on the project instructions of the particular batch you are indexing. If you'd like to provide these details someone will be able to provide you with further assistance.
Thank you for your help in this great work.
Sorry I hit post in error before completing my question
Baptism record shows:-
Sarah Matilda daughter of George Jeffreys and his wife Jane maiden name Harries.
So if I have understood the instructions correctly I would enter in the Mother's surname as
Harries Jeffreys (with no reference that Harries is the maiden name)
Seems odd putting the maiden name first as most records show married name then (nee Harries)
Here is batch