Just to throw some Marriage Bonds in the mix, there are these to ponder. They may, or may not be linked to your Tebby's. Keep or discard at your leisure.

Thomas TEBBET, widower of Castlethorpe, to Catherine Smith of Gayhurst. Parish of Marriage - Gayhurst, Bond granted - 15th Oct 1780.
Benjamin Tebby, Dealer in Hogs, of Quainton, to Sarah Holton of Quainton. Bond granted - 18th April 1788.
James Tebby of Gayhurst, to Matilda Moore of Moulsoe. Bond granted - 1830 @ Moulsoe.
John Tebby of Preston Bissett. to Mary Abraham of Pimlico in Tusmore, Oxon. Bond granted @ Preston Bissett. 15th Oct 1832.
There are 3 TIBBY in the bonds list, but all from Wendover, Bucks. 1779, 1788 & 1827.
Steve.
