The Latinised names are a cool idea, but those above aren't sound Latin and you know it. More like:
-- Georgius Washingtonius Cincinnatus (more properly, in fully Latinised form: Georgius Vasintonius Cincinnatus)
-- Ioannus Polkius Mexicanus [EDIT, thanks to @James XI: it should be Iacobus Polkius Mexicanus]
-- Wilhelmus Kinleius Hispanicus (McKinley is hard to Latinise, but I'm fairly sure the 'Mc' is typically dropped when names are Latinised)
-- Franclinus Rooseveltius Germanicus
-- Haroldus Trumanius Iapanicus
-- Dionysius Eisenhoverius Germanicus (Fun fact: "Dwight" comes from "Diot", which comes from "Dionysius")
Ioannes Cenetius Pulcher Cubanus
Georgius Rubus (from "rubum," apparently bush) Senior (et Junior) Mesopotamicus
Lindonus Filioannes Asiaticus
Ricardus Nixonus Mendax
Abraham Linconus Honestus Dixonicus Emancipator Magnus
(Based partially on knowledge of Spanish)