This is Philippa Chaucer's tomb effigy in East Hampshire, England.
Here is a wider shot of the tomb as a whole. Note (in the top photo) that
there is a Roet Wheel badge over Philippa's breast (her maiden name was Roet;
the Roet family was originally from Flanders; in Flemish, "roet" means "wheel").
The original coat of arms of her sister Katherine
bore (before her marriages) featured wheels as well.
For more information on Philippa's tomb and why it's so fascinating, see