This is him in Saffron Walden in 1861 (RG9):
GATWARD THOMAS 59 1122 94 SFW
GATWARD LUCRETIA 55 1122 94 SFW
GATWARD REBECCA 14 1122 94 SFW
GATWARD HENRY 27 1122 94 SFW
and other Gatward/Gatwood from Saffron Walden:
GATWARD ANN 48 1122 94 SFW
GATWARD EDWARD 36 1122 35 SFW
GATWARD MARTHA 66 1122 138 SFW
GATWOOD BARBARA 31 1122 13 SFW
GATWOOD CHARLES 4 M 1122 13 SFW
GATWOOD EDWARD 31 1122 13 SFW
GATWOOD ELIZABETH 49 1122 59 SFW
GATWOOD ELIZABETH 21 1122 56 SFW
GATWOOD HARRIET 12 1122 59 SFW
GATWOOD HENRY 55 1122 56 SFW
GATWOOD LUCRETIA 2 1122 13 SFW
GATWOOD MARTIN 23 1122 56 SFW
GATWOOD MARY ANN 28 1122 56 SFW
GATWOOD REBECCA 15 1122 56 SFW
GATWOOD SAMUEL 19 1122 56 SFW
and here they are from Saffron Walden 1851:
Surname Forename Age Birthplace Birth County Folio Census return Code
GATWARD THOMAS 49 HITCHIN HRT 399 SFW
GATWARD LUCRETIA 50 WITHERSFIELD SFK 399 SFW
GATWARD WILLIAM 18 LINTON CAM 399 SFW
and the others from Saffron Walden 1851:
GATWARD ANN 21 GREAT CHESTERFORD ESS 242 GCS
GATWARD ANN 53 ICKLETON CAM 242 GCS
GATWARD CHARLES 10 LITTLEBURY ESS 445 SFW
GATWARD ELIZABETH 11 SAFFRON WALDEN ESS 405 SFW
GATWARD ELIZABETH 16 LITTLEBURY ESS 405 SFW
GATWARD EMMA 16 SAFFRON WALDEN ESS 405 SFW
GATWARD GEORGE 56 WALDEN ESS 242 GCS
GATWARD HARRIET 2 SAFFRON WALDEN ESS 445 SFW
GATWARD HENRY 18 GREAT CHESTERFORD ESS 242 GCS
GATWARD HENRY 45 SAFFRON WALDEN ESS 405 SFW
GATWARD JANE 15 SAFFRON WALDEN ESS 405 SFW
GATWARD LIDIA 50 SAFFRON WALDEN ESS 381 SFW
GATWARD MARTHA 53 SAFFRON WALDEN ESS 504 SFW
GATWARD MARTIN 13 SAFFRON WALDEN ESS 405 SFW
GATWARD MARY 13 LITTLEBURY ESS 405 SFW
GATWARD MARY ANN 18 SAFFRON WALDEN ESS 405 SFW
GATWARD REBECCA 6 SAFFRON WALDEN ESS 405 SFW
GATWARD SAMUEL 9 SAFFRON WALDEN ESS 405 SFW
GATWARD SARAH 17 LITTLEBURY ESS 472 SFW
GATWARD WILLIAM 11 GREAT CHESTERFORD ESS 242 GCS
Essex Marriages:
town,fname1 ,sname1 , fname2, sname2, Parishes, Dates
1 Castle Hedingham Joseph HAYWARD Elizabeth GATWARD Wethersfield Of This Parish 04-Dec 1787
2 Castle Hedingham George BASHAM Mary GATWARD Of This Parish Of This Parish 10-Nov 1818
3 Castle Hedingham Edward GATWARD Maria SPURGEON Of This Parish Of This Parish 17-Jan 1821
4 Castle Hedingham John ELY Mary GATWARD Of This Parish Of This Parish 19-Aug 1825
5 Castle Hedingham Samuel GATWARD Elizabeth BASHAM Of This Parish Of This Parish 10-Aug 1826
6 Littlebury William GATWARD Martha KIRBY 1829
7 Castle Hedingham William MASON Harriett GATWARD Of This Parish Of This Parish 01-Nov 1831
8 Castle Hedingham Thomas ROWE Eliza GATWARD Of This Parish Of This Parish 27-Jan 1834
9 Castle Hedingham Robert GATWARD Rebecca PATTEN Of This Parish Of This Parish 24-Jul 1834
10 Castle Hedingham Henry GATWARD Charlotte SILLITOE Of This Parish Of This Parish 05-Sep 1836
11 Castle Hedingham Frederick HART Emily GATWARD Great Maplestead Great Maplestead 07-Jan 1853 Carpenter
Sorry, missed him before as I assumed Kate had searched all 1861!
As you said, they appear to have moved around a bit!!
Please post the refs of those you want looked up in the full censi again, as I only have indices!
Geoff.