Tobias-Zamoyski - second son born 2008

[Shinjinee]

Arabella Zamoyski (properly Zamoyska) of the Polish counts, and her
husband Oliver Tobias, the actor, have had a second son Felix in 2008.

http://www.dailymail.co.uk/news/article-1050391/A-Hola-job-Gabriella.html

Arabella is 34, and suffered from severe post-natal depression after
the birth of elder son Luke four years ago, after which the couple
were estranged. Husband Oliver Tobias is 61.

Does Arabella have any British aristocratic ancestry?

Shinjinee