The line of Hornblowers in Boston and New England has been an honorable one as far back as family prestige can be traced.

[3] In 1888, Henry Hornblower and John W. Weeks (later U.S. Secretary of War under Warren G. Harding) formed a partnership which in time became a financial power in this part of the country.

[5] On May 12, 1886, Hornblower married Harriet Frances "Hattie" Wood (1864–1955) of Arlington, where they lived for thirty-six years.

[5] He died of a heart attack, after a round of golf with friend Donald Ross,[2] at Pinehurst, North Carolina on April 11, 1941.

[3] His grandson, Henry Hornblower II, founded Plimoth Plantation, the living history museum in Plymouth, Massachusetts in 1947.