Meaning and Name Origin
Cato \c(a)-to\ as a boys' name (also used as girls' name Cato) is of Latin origin, and the meaning of Cato is "all-knowing". Cato the Elder, born Marcus Portius, was a high-minded Roman statesman of the time of Julius Caesar.
Cato is an uncommonly occurring first name for males but a very prominent surname for both adults and children (#3192 out of 88799, Top 4%). (2000 U.S. Census)
Below is a charted comparison of the usage of the boy name Cato and affiliated names. Marco (#308 a year ago), Marcus (#158) and Markus (#737) are the prominent variation forms of Cato (#unlisted). These boy names reached the peak of their popularity in 1994 and have become significantly less widespread since. Marco (#308), Marcus (#158) and Markus (#737) are three of the more trendy baby names among these, with Marcus having a rebound in usage. (Top 1000 Birth Names Statistics, 2014)