In 1871 Alfred Trenberth, aged 25, born in Gwennap Cornwall, miner, and wife Elizabeth Trenberth, aged 26, born in Gwennap, were living in Goongumpus, Gwennap. With them was son Philip (1) of Gwennap.
In 1881 Alfred Trenberth, aged 35, born in Gwennap, carrier, and wife Eliz. J. Trenberth, aged 36, born in Gwennap, were in Goongumpus, Gwennap. Present were children (born in Gwennap) Jane (9), scholar, Edwin (7), scholar, Clara (5), scholar, and John A. (3).
In 1891 Alfred Trenberth, aged 45, born in Gwennap, farmer, and wife Elizabeth J. Trenberth, aged 46, born in Gwennap, were living in Wheal Jewel, Gwennap. With them were children (born in Gwennap): Elizabeth J. F. (19), Clara (15), farm servant, John A. (13), farm labourer, Sarah (9), scholar, Tom (7), scholar.
On 4 Dec 1898, Alfred Trenberth, age 50, miner of Cornwall, arrived in New York, USA per S. S. Britannic, heading to Arizona.
At the time of 1900 U.S. Federal Census Alfred Trenberth, aged 54, born in England, teamster, was in Providence, Yavapai, Arizona Territory. With him was son John A. (21) of England, teamster (arrived in 1899).
In 1910 Alfred Trenberth, aged 65, born in England, widower, laborer [doing] odd jobs, was in Poland, Yavapai, Arizona.
In 1930 Alfred Trenberth, aged 84, born in England, widower, was living in Redondo Beach, Los Angeles, California.
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Alfred Trenberth, of 4836 Nelson Ave., Redondo Beach, widowed, real estate broker, died aged 87 years 1 month, 11 days, informant Edwin H. Trenberth of 729 Sapphire St. Redondo. 3