Sigifredo is a distinctive boys' name in United States, ranking #9440 in 2006 with 8 recorded births. This places Sigifredo in the bottom 33% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1998 with 19 births ranking #3824. Since 1996, the popularity has decreased by 20.0%. In 2006, approximately 1 in every 256,890 boys born was named Sigifredo. RISING Recent data shows the name is currently rising.