Canute didn't have any veriable descendants. He had four children,three sons and a daughter. One of the sons died young, another never married and had no known children, and the third son is believed to have had only one illegitimate son who disappears from records without any known issue. The daughter married and had one daughter who became a nun so no issue either, at least if she had, she certainly wasn't admitting it!
The nearest relationship I can think of is that Canute the Great is said to have been the grandfather of Mieszko I of Poland.
As for Henry the Fowler, I haven't a clue but he had several children and granchildren. Those Royal lines are fairly well documented.
You need to take everything on Wikipedia with not just a grain of salt, but an entire salt cellar if not salt mine! The accuracy of the information there depends on who wrote the article and some of the 'facts' on there are very poorly researched. Also be careful with genealogical resources as amateur genealogists often publish incorrect family trees and unverified information, in good faith, thinking they're accurate.
Woops! I meant grandson, see how easily it happens!