Some information you may or may not have:

United States Census, 1880
Residence: Leonardtown, St. Mary's, Maryland
NARA Film Number: T9-0514
Page: 59
Page Character: A
Entry Number: 206
Film number: 1254514
Parent Joseph A. Peacock M 36 b Md father b Md mother b Md
Parent Catherine Peacock F 36 b Md father b Md mother b Md
George C. Peacock M 8 b Md father b Md mother b Md
Joseph H. Peacock M 7 b Md father b Md mother b Md
Andrew B. Peacock M 5 b Md father b Md mother b Md
Teresa Peacock F 4 b Md father b Md mother b Md
Catherine M. Peacock F 7M b Md father b Md mother b Md
Note: image difficult to read, may be Catherine N. Peacock

or

United States Census, 1880
Residence: Centerville, St. Mary's, Maryland
NARA Film Number: T9-0515
Page: 161
Page Character: A
Entry Number: 1821
Film number: 1254515
Parent Philip Peacock M 43 b Md father b Md mother b Md
Parent Martha E. Peacock F 36 b Md father b Md mother b Md
Mary I. Peacock F 10 b Md father b Md mother b Md
John H. Peacock M 8 b Md father b Md mother b Md
George F. Peacock M 6 b Md father b Md mother b Md
Catherine Peacock F 3 b Md father b Md mother b Md
Betty Blankingship F 24 b Va father b Va mother b Va

United States Census, 1900
Residence: Washington D.C. city, Washington, District of Columbia
Enumeration District: 0143
Page: 4
Sheet Letter: B
Family Number: 34
Reference Number: 59
Film Number: 1240164
Image Number: 00782
Honora Obrien F
Alice M Green F
Mary Bird F
Josephine Kelly F
Ruth M Swann F
Lucy W Watson F
Florence Casswell F
Sarah A Turner F
Mary A Cole F
Annie E O'Brien F
Elizabeth C Nichols F
Flora L Myers F
Nellie C Peacock Employee W F Single b Jun 1877 Md father b Md mother b Md

District of Columbia Marriages, 1811-1950
Nasme: George C Herbert of St. Mary's Co., Maryland
Titles & Terms:
Event: Marriage
Event Date: 01 Nov 1905
Event Place: District of Columbia
Age: 30
Estimated Birth Year: 1875
Spouse: Nellie C Peacock of Washington, D.C.
Spouse's Titles & Terms:
Spouse's Age: 26
Spouse's Estimated Birth Year: 1879
Reference Number:
Film Number: 2108270
Digital Folder Number: 4259033
Image Number: 00744

United States Census, 1910
Residence: Election District 8, St Mary's, Maryland
Family Number: 182
Page Number: 10
George C Herbert Head W M 33y b Md father b Md mother b Md
Spouse Nellie C Herbert Wife W F 30y b Md father b Md mother b Md
Child Lourena C Herbert Daughter W F 3y b Md father b Md mother b Md
Child Eileen E Herbert Daughter W F 2y b Md father b Md mother b Md
Child Neighten Herbert Son W M 0y b Md father b Md mother b Md
Mary G Counabaugh W F 17y b Md father b Germany mother b Md
Biscoe Barnes B M 21y b Md father b Md mother b Md

United States Census, 1920
Residence: , St Marys, Maryland
Film Number: 1820677
Digital Folder Number: 4301043
Image Number: 00084
Sheet Number: 3
George C Herbert Head W M 47y b Md father b Md mother b Md
Nellie C Herbert Wife W F 39y b Md father b Md mother b Md
Child Lorena C Herbert Daughter W F 13y b Md father b Md mother b Md
Child Eillen E Herbert Daughter W F 11y b Md father b Md mother b Md
Child Mary P Herbert Daighter W F 5y b Md father b Md mother b Md
Child Genevive C Herbert Daughgter W F 2y1m b Md father b Md mother b Md

United States Census, 1930
Event Place: Washington, Washington, District of Columbia
Enumeration District Number: 0335
Family Number: 359
Sheet Number and Letter: 28A
Line Number: 41
NARA Publication: T626, roll 302
Film Number: 2340037
Digital Folder Number: 4531923
Image Number: 00061
Nellie C Herbert Head W F 58 Widow
Child Ilene E Herbert F 21
Child Pauline E Herbert F 15
Child Genevieve Herbert F 11
Son-in-law Felix Copsey M 35
Child Lorena Copsey F 23

District of Columbia Deaths and Burials, 1840-1964
Name: George Clayton Herbert
Gender: Male
Burial Date: 27 Apr 1925
Burial Place: Hollywood, St Mary Co., Md.
Death Date: 25 Apr 1925
Death Place: District Of Columbia
Age: 51
Birth Date: 13 Nov 1874
Birthplace: St Marys Co., Maryland
Occupation: Farmer
Race: White
Marital Status: Married
Spouse's Name: Nellie Peacock
Father's Name: Chatman Hayden
Father's Birthplace: Maryland
Mother's Name: Levina Hayden
Mother's Birthplace: Maryland
Indexing Project (Batch) Number: B01112-5
System Origin: District of Columbia-EASy
Source Film Number: 2116023
Reference Number: cn 291360

Cheers, Michael
Kent Island, Maryland