> I would like to check, if the name of the second element of root is
> "youngestSon".

Note that the root of the tree is not the top level element (parent
here) but a root node (document) node that is the parent of that
element.

the XPath /parent/*[2][self::youngestSon]  will return a non empty result just
in the case that the second element is a youngestSon element. (XPath has
no access to the tags in the document, so the subject line of this
thread is misleading)

David

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