add raw string to regex

I am writing a regex where I suppose to add a raw string before the match field, for example here is my regex which I used to assign the name with Sally from the provided text.

Regex: (?'name'Sally) 

text: Call me Sally.

name = Sally

What I want is to add something before Sally, such as

`ABSally` 

or

`12Sally`

within the regex pattern so the name group should hold complete value. How can I achieve this functionality?