Wenceslao is a distinctive boys' name in United States, ranking #13964 in 2014 with 5 recorded births. The name reached its all-time peak in 2005 with 13 births ranking #6202. Since 1996, the popularity has decreased by 16.7%. In 2014, approximately 1 in every 384,088 boys born was named Wenceslao. FALLING Recent data shows the name is currently falling.