Noble and of a noble kind
Alyda is a variant of Alida, which is a Dutch and German diminutive of Adelaide. It ultimately derives from the Germanic name Adalheidis, combining the elements 'adal' (noble) and 'heid' (kind or sort).
Less common today
Alyda isn't in the latest US Top 1000. It last peaked at #9,208 in 2000.
16th-century German noblewoman
US births per 5-year period, 1990βpresent (SSA data).