There was an Edward Keyes at the dam site too":
https://www.newspapers.com/image/39799374/?terms=keyes
Weekly Journal-Miner (Prescott, Arizona)
06 Feb 1889, Wed
Page 1
who killed a man.
Geo. W. Sines and Charles Keyes left Prescott c. Feb 17, 1887 to set up the saloon ( Weekly Journal-Miner (Prescott, Arizona)
16 Feb 1887, Wed
Page 3 = https://www.newspapers.com/image/39793957/?terms=keyes ) Note brief statement that the "Company" was building a recreational boat and that a summer resort was anticipated on the lake.
"Charley Keyes has com up form the big dam." https://www.newspapers.com/image/39797606/?terms=keyes
Weekly Journal-Miner (Prescott, Arizona)
09 Nov 1887, Wed
Page 3
Charles Keyes was 20 years old in 1887... It may be unlikely that he ran a saloon w/ George Sines, but it's not impossible
https://www.newspapers.com/image/39797155/?terms=keyes#
It looks to be that the Chas. Keyes who ran the Walnut Grove Dam saloon also had a mining claim : https://www.newspapers.com/image/39795680/?terms=%22Chas.%2Bkeyes%22\
The Weekly Arizona Miner (Prescott, Arizona)
27 Apr 1877, Fri
Page 4
... at the Victorine gold mine at Groom Creek
see also:
https://www.newspapers.com/image/39783619/?terms=%22Chas.%2Bkeyes%22
Attended wedding = Weekly Journal-Miner (Prescott, Arizona)
26 Dec 1888, Wed
Page 1
Charles Keys of Yavapai Co., AZ seems to have been born in the month of June: see: https://www.newspapers.com/image/78258049/?terms=Keyes
more on birthday: "Charles H. Keyes" is born on June 25th... but no year is given. See: https://www.newspapers.com/image/78608752/?terms=Keyes
Weekly Journal-Miner (Prescott, Arizona)
25 Jun 1890, Wed
Page 3
developing the "Connecticut mine" west of town (Prescott) Weekly Journal-Miner (Prescott, Arizona)
21 May 1890, Wed
Page 3
https://www.newspapers.com/image/39780181/?terms=Keyes
definite proof that Charles H. Keyes of Prescott is not Charles Homer Keyes:
1880 census of Prescott:
Name: Charles H. Keyes
Age: 53
Birth Date: Abt 1827
Birthplace: Massachusetts
Home in 1880: Prescott, Yavapai, Arizona, USA
Street: Montezuma Street
Race: White
Gender: Male
Father's Birthplace: Massachusetts
Mother's Birthplace: Massachusetts
Occupation: Miner