Well that threw a spanner in the works.
If he died c 1825 then Ann may have remarried?
The William Gripper who died 30 Jun 1840 was age 25 from what I can see.
Jasper Gripper was bapt 14 Feb 1810 to THOMAS/MARTHA
William also to same Parents 08 Mar 1815, mother as Martha Bryckner Gripper
1st child seems to be Martha Griffers *1806
Thomas was a Tanner
He was buried 09 Sep 1834 age 53 abode The Tan Yard