sc-preferred-attribution-list

sc-preferred-attribution-list is a variable defined in `supercite.el'.
Its value is

("sc-lastchoice" "x-attribution" "firstname" "initials" "lastname")

Documentation:
Specifies what to use as the attribution string.
Supercite creates a list of possible attributions when it scans the
mail headers from the original message. Each attribution choice is
associated with a key in an attribution alist. Supercite tries to
pick a "preferred" attribution by matching the attribution alist
keys against the elements in `sc-preferred-attribution-list' in order.
The first non-empty string value found is used as the preferred
attribution.

Note that Supercite now honors the X-Attribution: mail field. If
present in the original message, the value of this field should always
be used to select the most preferred attribution since it reflects how
the original author would like to be distinguished. It should be
considered bad taste to put any attribution preference key before
"x-attribution" in this list, except perhaps for "sc-lastchoice"
(see below).

Supercite remembers the last attribution used when reciting an already
cited paragraph. This attribution will always be saved with the
"sc-lastchoice" key, which can be used in this list. Note that the
last choice is always reset after every call of `sc-cite-original'.

Barring error conditions, the following preferences are always present
in the attribution alist:

"emailname" -- email terminus name
"initials" -- initials of author
"firstname" -- first name of author
"lastname" -- last name of author
"middlename-1" -- first middle name of author
"middlename-2" -- second middle name of author
...

Middle name indexes can be any positive integer greater than 0,
although it is unlikely that many authors will supply more than one
middle name, if that many. The string of all middle names is
associated with the key "middlenames".

You can customize this variable.