Looked at the NBI for Holland burials at Potsgrove, Benjamin was buried 5 May 1850 age 59. There was also John Holland buried 9 May 1844 age 75 (born 1769), Elizabeth Holland buried 3 May 1829 age 60 (born 1769) & Mary Holland buried 14 May 1843 age 51 (born 1792). Looking at 1841 census, in nearby Husbourne Crawley is John Holland, shepherd age 70 NOT born in county, & (daughter?) Mary age 45 born in Beds. The IGI has baptism on 24 Mar 1793 at Potsgrove of Mary Holland, daughter of John & Elizabeth; plus the marriage at Potsgrove on 17 Sept 1790 of John Holland & Elizabeth Staniford.
Might these be Benjamin's parents?
Regards John