I found in 1910 who seems to be your Andrew Murdock.
1910 Pct 6, Glenwood Springs, Garfield Co., Colorado Andrew C. Murdock 34 b. 1876 PN PN PN, married 1909, Scavenger for the City Jennie Murdock 22 b. 1888 CO PN PN
I have not found him in 1900. Have you?
This may be Andrew's family in 1880. What do you think? 1880 Perry, Armstrong, PN Andrew S. Bott 72 Baveria Baveria Baveria Sophia Bott 55 wife PA Prussia PA Joseph Bott 20 son PA Braveria PA Chas. E. Bott 14 son PA Braveria PA J. W. Murdock 37 b. 1843 son in law PA PA PA Mary J. Murdock 26 b. 1854 dau PA Bavaria PA M. A. S. Murdock 7 gdau PA PA PA A. C. Murdock 5 gson PA PA PA [Is this Andrew C. b. 1875/1876?] W. V. Murdock 2 gson PA PA PA