Zachary Taylor Barnum was named after Zachary Taylor (1784-1850), American military leader and twelfth President of the United States.
In the 1880 US Census for Table Rock, Siskiyou County, California the family of Zachary T. Barnum, Sr. was enumerated as follows:
Dwelling #107; Family #111
Barnum, Z. T.; W; M; 31; Married; Farmer, b. Missouri; Both parents b. New York
Barnum, Mary E.; W; F; 23; Wife; Married; Keeping house; b. Iowa; Father b. Pennsylvania; Mother b.Kentucky
Barnum, Agnes; W; F; 3; Daughter; Single; b. California; Father b. Missouri; Mother b. Iowa
Barnum, James R.; W; M; 1; Son; Single; b. California; Father b. Missouri; Mother b. Iowa
Campbell, Martha; W; F; 45; Widowed; Housekeeping; b. Pennsylvania; Both parents b. Ireland
Williamson, David; W; M; 27; Married; Laborer; b. Ohio; Both parents b. Ireland
Barnum, Marion; Brother; W; M; 26; Single; Laborer; b. Missouri; Both parents b. New York