Born 29 Jan 1892 / Died 15 Jun 1972 in Yarmouth Port, Massachusetts (https://www.findmypast.com/transcript?id=US/TRIB/001764296)

Son - Donald Mann (born 1922)

Grandson - Bruce Hartling Mann (born 1950)

Father's name - John P Mann

Father's birth place - Massachusetts

Mother's name - Harriet E Mann

Mother's birth place - New York

1910 census - Harold C Mann at home ?

https://search.findmypast.com/record?id=USC%2F1910%2F004972453%2F00763&parentid=USC%2F1910%2F004972453%2F00763%2F027

1917 (June) - WW1 Draft registration

Transcript - [HG003C][GDrive]

"Name - Harold Corneilus Mann / Birth date 29 Jan 1892 / Place of birth as transcribed Boston,Massachusetts, United States / Residence : Dorchester City No 18"

1919 - Son Robert born

https://books.google.com/books?id=jIDE0I9qLukC&pg=PA211&lpg=PA211&dq=%22robert+lapham+mann%22&source=bl&ots=HlWjqEVkMC&sig=ACfU3U3U0WIWw229hEPBhUt38MbsWDAc6w&hl=en&sa=X&ved=2ahUKEwiOgP6ewp_lAhWLmuAKHU52DzEQ6AEwAXoECAEQAQ#v=onepage&q=%22robert%20lapham%20mann%22&f=false

"Robert Lapham Mann"

1920 census - Watertown MA

Transcript - [HS0026][GDrive]

Full census sheet - [HS0027][GDrive]

1930 Census - Arlington MA

Note : It is "William R Lapham" who is father-in-law

Transcript- [HS0020][GDrive] / Full Census Sheet - [HS0021][GDrive]

1940 Census - Arlington MA

Father-in-law William Lapham born 1858 or 1859) living in same home

Transcript - [HS0023][GDrive] / Full Census Sheet - [HS0024][GDrive]

1942 (April 26) - Harold C Mann - WW2 draft

US Government - WarDepartment

1946 (Jan ) - Daughter Shirley (USN) gets engaged

https://www.newspapers.com/image/433933667/?terms=robert%2Bmann%2Bnavy%2Barlington

1946 (May) - Daughter Shirley Wedding

Full page : [HN00Q1][GDrive]

Son Robert Lapham Mann is present ; Son Donald Mann (born 1922) misses this wedding.

1947 (Nov) - Son Donald Mann get engaged

Full page - [HN00PH][GDrive]

1948 (June) - Son's wedding

Full page - [HN00PF][GDrive]

1953 (Nov) - Harold C Mann - 38 years at Watertown Arsenal (as of 1953 )

Full page - [HN00QI][GDrive]

1972 (June) - Harold Cornelius Mann passes

Also : https://www.newspapers.com/image/435448607/?terms=%22donald%2Bmann%22

Full page : [HN00PM][GDrive]

Father John P Mann - 1 yr old in 1860 census

https://www.findmypast.com/transcript?id=USC/1860/0000665768429