Henryk Józef Kazimierz Sienkiewicz, Jr. - King Of England

This gentleman's direct paternal line only goes back to Piotr Oszyk Sienkiewicz h. Łabędź , and there are no sources in that path, so I'd be curious to know why you think that.

It had to go through female lines too, as some of the male desendents never had any heirs, e.g Harold's sons never produced any offspring still around today, so the line wouldve gone back up through a female branch, I'll make a chart about it if it helps illustrate