Weird Nomenclatures

Today in the data mines I noticed that someone had given their toddler a name which for the sake of her privacy I won't repeat, but which was structured: trendy girl's name / trendy girl's name / mother's family name / father's family name II. It was the "II" that got to me, since I can't imagine anyone else ever having worn this particular four-barrelled name. Two possibilities occur - the rather sad one that perhaps her parents lost a baby, and gave the next one the exact same name in some act of defiance; or, since her father is also So-and-so II, that they treated the "II" as part of his family name.

Then there's the family that named their three offspring Wilbert, William and Wilhelmina. Their father is Wilfredo. I can only assume he owns a lot of monogrammed items that he wants to bequeath.