What does Wilkie mean?
Wilkie \wi(l)-kie\ as a name for boys is of Old English and Old German origin, and Wilkie means "determined protector". Wilkie is a form of Wilkes (Old English): probably a short form of Wilkins. Wilkie is also a derivative of William (Old German): from wil meaning "will".
Wilkie has 33 different forms via Wilkes, William: Bill▼, Bille, Billie▼, Billy▼, Guglielmo, Guillaume, Guillermo▼, Liam, Vilhelm, Villem, Wilek, Wiley▼, Wilhelm▼, Wilhelmus, Wilkinson, Will▼, Willem, Willhelmus, Willi, Williams▼, Williamson, Willie▼, Willis▼, Willkes, Willkie, Wills, Willson, Willy, Wilmer▼, Wilmot, Wilmott, Wilson▼ and Wim.
Wilkie is an unusual given name for males but a very prominent surname for both adults and children (#4680 out of 150436, Top 3%). (2000 U.S. Census)
Displayed below is an analysis of the usage of Wilkie and associated names. Prominent varying forms of Wilkie (#unlisted) are Bill, Billie, Billy (#794 the previous year), Guillermo (#678), Liam (#2), Wiley, Wilhelm, Will (#763), William (#5), Williams, Willie (#722), Willis, Willy, Wilmer and Wilson (#594). Usage of these boy names reached its most widespread during the years 1920-1929 (usage of 0.5873%) and has become significantly lower since (usage 0.2295%, down 60.9%), with versions such as Billy, Guillermo, Will, Willie and Wilson falling out of fashion. Liam (#2) is the most chic boy name in this compilation. (Top 1000 Baby Names Statistics, 2014)