@sozobe,
That is an interesting site.
Under the list of sibling names that go with a particular name - all of my siblings but one were listed: James, David, Laura and Sarah - only Catherine was missing.
And I happened to name my two children (Joseph and Olivia) names that were also listed as appropriate sibling names for my name - so I guess that means that our names sound good together- who would have guessed?
Henry is a very popular boy's name in England - but I've never heard it shortened to Hank here. I've never heard of a Clancey in England or America.
Jack is the most popular English boy's name and Olivia is the most popular girl's name (for the past three years).