The family did become
personna non grata after late 1870 when one of Bentons grandchildren murdered a woman in the village and was consequently hung in Bedford gaol on census day 1871. So I wouldn't expect any after that date.
I have marriages and baptisms for the family up to 1810 in the parish of Little Staughton. I also have the transcribed registers 1598 to 1812.
I have looked in the following parish transcribed record
upto 1812.
Tilbrook;Dean;Shelton;Yielden;Melchbourne;Swineshead;Pertenhall;Keysoe;
Riseley;Knotting;Souldrop;Odell;Sharnbrook;Bletsoe;Felmersham;Stevington;
Pavenham;Milton Ernest;Thurleigh;Bolnhurst;Colmworth and Eaton Socon.
Any volunteers for these surrounding parishesin the 1812-1837 gap?

Regards
Spark