It's worth noting that:
* Old Saxon is an extinct Germanic language spoken in what is now northern Germany and the Netherlands.
* Modern German has "stark" as the word for "strong." This is a direct descendant of the Old Saxon "stār."
* English also has "strong" as the word for "strong," but it is derived from Old English, which was a different, though related, Germanic language.
While the English word "strong" and the Old Saxon "stār" have a common ancestor, they are not direct cognates, as they evolved separately over time.