"1880 United States Federal Census", database with images, Ancestry (https://ancestry.co.uk accessed 6 February 2018), David John citing Year: 1880; Census Place: Provo, Utah, Utah; Roll: 1338; Page: 125B; Enumeration District: 081

Text from source:

Name Color Sex Age Born within year Relationship Civil Condition Married this year Occupation Months unemployed Health Attended school this year Cannot read Cannot write Birthplace Father Birthplace Mother Birthplace
David John W M 47 1833 Head M Farmer Wales Wales Wales
Mary John W F 45 1835 Wife M Wales Wales Wales
Mary John W F 17 1863 Daughter S Y Utah, USA Wales Wales
Martha John W F 15 1865 Daughter S Y Utah, USA Wales Wales
David John W M 12 1868 Son S Y Utah, USA Wales Wales
Elizabeth John W F 10 1870 Daughter S Y Utah, USA Wales Wales