Changing fonts in headers

[Michael J Millett]

I am sorry to report that I have still not been successful in changing 
the font of the headers, and request some suggestions. LP ignored the 
following:

\header {
  title    = \markup { \override #'(font-name . "Goudy") "FEUILLET 
D'ALBUM"}

and

\header {
   title    = \markup { \override #'(font-name . "Goudy") "FEUILLET 
D'ALBUM"

Other combinations I've tried also have not worked.

I now wonder if LP contains a vehicle for changing the header fonts. 
Does anyone know?

Thanks again for your efforts.

Michael