Scholar or protection
A modern phonetic variation of the Dutch name Schuyler, which originally denoted a scholar or student. It is also frequently associated with the English word 'sky', suggesting a limitless or celestial nature.
Less common today
Skyllar isn't in the latest US Top 1000. It last peaked at #7,106 in 2000.
US births per 5-year period, 1990βpresent (SSA data).