What does Barnaby mean?
Barnaby \b(a)-rna-by, bar-naby\ as a name for boys is of Greek and Aramaic derivation, and the meaning of the name Barnaby is "son of consolation". Barnaby is a derivative of Barnabas (Greek, Aramaic): Greek form of an Aramaic name. See also Barney and Burnaby.
Barnaby is an uncommon given name for men but a very popular last name for both adults and children (#13931 out of 150436, Top 9%). (2000 U.S. Census)
Shown below is an analysis of the usage of the boy name Barnaby and associated names. Barney is the only popular variation form of Barnaby (#unlisted) appearing in the Top 1000. Adoption of these boy names reached its most widespread during 1880-1889 (usage of 0.779%) and has become significantly less since, with Barney becoming less trendy. (2014 Birth Statistics)