Greeting's & Welcome. . .Heather.
I'm afraid I didn't find any Mowbray's in
Stonesby 1841. Census. ( HO107 / 588 / 16 / Page 1 ~13.)
Although there was several pages not available. . .

Again no Mowbray's found in Stonesby for the Census of 1851.. . . .
But I did find what I think is Richard & Hannah's Marriage :-
RICHARD MOWBRAY ~ HANNAH HUDSON.
Loughborough. 1820.
By Banns.
1861. Scanned Census
Found the following :-
RG9 2301 / 16.
New Street Melton Mowbray.
John Mowbray. Head. 39. Journeyman Maltster. Born Grace De le / Garendon ? ? ?
Catherine. Wife. 42. Born Melton Mowbray.
Thomas. Son. 18. Journeyman Maltster. Born Melton.
George. Son. 14. Saddler App. Born Melton.
Richard. Son. 11. Scholar. Born Melton.
* * * * * * * * * * * *
I’ll attach the scan for you to make up your mind as to
The birth place for John. . .
I could make out either Grace dieu or Garendon
Both being on the out-skirts of Loughborough.
Hope this is of help to you.
MIKE.