Madelyn, of French origin, means 'from the bright meadow'. It is derived from the medieval female name Mahault, which was a Norman variation of the German name Madelgard. In English, it evolved into Matilda and then to Madeline, with Madelyn being a more recent variant spelling.
The name Madelyn has seen some fluctuation over the years, with peaks in popularity around 2004 and a recent resurgence starting from 2016.