It is unclear whether these notes might be related to this Jacob Brenizer, or his descendants.
1820 Jacob Brenizer (age 45+) was listed in the 1820 census for West Hempfield, Lancaster County, Pennsylvania with 5 females under age 26. 
1830 Jacob Brenhiser (age 60-70) was listed in the 1830 census for West Hempfield, Lancaster County, Pennsylvania with 2 females under age 15-20 and 2 females age 20-30. The adjacent listing was Jacob Jr age 30-40 with female age 20-30. Other common neighbors (Garber, John Hinkle, Joshua Keller) suggest that the 1820 and 1830 census listings are for the same Jacob Brenizer. 
 United States Federal Census, 1820, [AncestryImage], [AncestryRecord].
 United States Federal Census, 1830, [AncestryImage], [AncestryRecord].