I did a recent post about this and got some good responses.
http://www.behindthename.com/bb/baby/4035331
I've known plenty of
Madeline's that pronounced the end -lynn instead of -line or -leen. It's not a horrible mispronunciation but I know it annoys many name nerds. Same with
Tara being pronounced TER-uh instead of TAHR-ah.