John was born about 1817. [1]
16 Sept 1850 Laborer Birth Year (Estimated): 1815 ohn Mount Male 35 New Jersey Lydia Mount Female 25 New Jersey Johnson Mount Male 5 New Jersey Catharin Mount Female 3 New Jersey Chas Mount Male 1 New Jersey Rebecca Smith Female 66 New Jersey M-I-L???? Middletown Township "United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:M6M2-1XN : 23 December 2020), John Mount, Middletown Township, Monmouth, New Jersey, United States; citing family , NARA microfilm publication (Washington, D.C.: National Archives and Records Administration, n.d.).
Event Date: 1860 • Event Place: Middletown Chapel Hill, Monmouth, New Jersey, United States • Event Place (Original): New Jersey, Monmouth, Middletown (Chapel Hill) Sex: Male Age: 41 Race: White Birth Year (Estimated): 1819 Birthplace: New Jersey • John P Mount Male 41 New Jersey FARMER Lydia M Mount Female 33 New Jersey Johnson Mount Male 16 New Jersey Catharine Mount Female 14 New Jersey Charles Mount Male 10 New Jersey Mary C Mount Female 6 New Jersey Alvin H Mount Male 4 New Jersey Edwena Mount Female 1 New Jersey "United States Census, 1860", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MFH2-7PN : 11 November 2020), John P Mount, 1860.
AND CHECK THESE OUT just above in the census Thomas H Mount Male 39 White 1821 New Jersey 75 8795 Frances Mount Female 39 White 1821 New Jersey 75 8796 Charles Mount Male 15 White 1845 New Jersey 75 8797 Maria Mount Female 6 White 1854 New Jersey 75 8798 Betsey Mount Female 14 White 1846 New Jersey 75 8799
death of johnson mount https://www.familysearch.org/ark:/61903/1:1:271M-8Q5