You say it the exact same as it would be in English.
In Irish 'Madelyn' is usually Madailéin [pron. mod-i-layn] or sometimes Máighdlín.Not sure about Greer.
Madelyn is French
Madelyn Davis's birth name is Madelyn Pugh.
I would say 2 or 3.
Madelyn Gosselin's birth name is Madelyn Kate Gosselin.
Madelyn Deutch is 5' 5".
Madelyn Night is 5' 7".
Madelyn Gay goes by Mady.
Madelyn Pugh was born on March 15, 1921.
Madelyn Glickfeld has written: 'Antiquated Subdivisions'
Madelyn Pugh died on 2011-04-20.
Madelyn Dunham died on 2008-11-02.