Born in London.1

2nd son of 10 children
Father - Robert Mylne
Mother - Maria (May) Home, daughter of Robert Boyne Home, surgeon

Baptised in Clerkenwell, St James.2

Father - Robert Mylne
Mother - Mary Mylne

Mentioned in Will.3

of Robert Mylne
Described as :-"my son William Chadwell Mylne"

Signature on Will attested to in Prerogative Court of Canterbury.3

of Robert Mylne

Executor.3

of the will of Robert Mylne
Joint executors :-
William Chadwell Mylne
Everard Home
William Duncan

Married Mary Smith COXHEAD in Clerkenwell, St James.14

From the Parish Register :-
"William Chadwell Mylne Esquire of this Parish and Mary Smith Coxhead of the Parish of Saint Luke Old Street were Married in this Church by Licence this tenth day of April  in the Year One thousand eight hundred and Thirteen
By me Richard Hendon A.M. Prebendary of St Paul's
This Marriage was solemnized between us
William Chadwell Mylne
Mary Smith Coxhead
In the Presence of .-
Catherine Poynter Coxhead
Jos Hales
B L Coxhead"

Witness at wedding in Great Amwell.4

of Charlotte Catherine Mylne and Charles Greaves

Birth of daughter Emily MYLNE in Clerkenwell, St James.11

Birth of son Robert William MYLNE in Clerkenwell, St James.12

Birth of daughter Bower Caroline MYLNE in Clerkenwell, St James.13

Witness at wedding in Paddington, St James.5

of Mary Alexivina Campbell and Edward Crompton Lloyd Hall

Witness at wedding in Holborn, St Giles in the Fields.6

of Charles Dugald Campbell and Bower Caroline Mylne

Occupation Annuitant in Ware.7

Recorded in census in Ware, Hoddesdon (Amwell Village).7

William C Mylne - Head - Married - 70 - Annuitant - born London,
Mary S Mylne - Wife - 60 - born London,
Staff x 3

Died in Amwell.1,8,9

From the Newcastle Journal :-
"At his residence, Amwell, Herts, on the 25th inst., in his 83rd year, Wm. C. Mylne, Esq., C.E., F.R.S."

Memorial or Grave Stone in Great Amwell, St John the Baptist, Mylne Family Vault.10

Probate in Principal Registry.8

of the estate of William Chadwell Mylne of Amwell and of New River Head.
Executors :-
Robert William Mylne of Whitehall Place, the son
William Chadwell Mylne of Bush Hall Edmonton, the son
Charles Rivington of Fenchurch Building