Decimus Is A Masculine Name Of Latin Origin. Translating To “tenth,” This Name Is An Ideal Choice If Baby Is Going To Be Welcomed By Plenty Of Siblings. If You’re A Shakespeare Buff, The Name Decimus Can Also Connect Your Bundle Of Joy To The Character In His Play Julius Caesar, Who Played A Role In Julius Caesar’s Assassination. Whether You Want Baby To Embrace Their Thespian Side Or Build Their Love For Roman History, The Name Decimus Will Provide Plenty Of Inspiration.