It would seem that there may be a common ancestor between our two families, since the current trail I am following centres very heavily around the Kent area and into London. If so, maybe the following will be of interest to you, and perhaps you may even have some info to add:
Circa 1600 there were 3 families i know of in St Peter's, Kent: John ELYARD (Born ?, Married 28/7/1600 to Elizabeth North) Nathanyell ELLYARD (Born Abt 1570, Married Abt 1598) Roger ELLIARD (Born Abt 1568, Married 24/1/1592 to Agnes Lewes)
I have no further info on either Roger or Nathanyell. John Elyard and Elizabeth had at least 1 child, Nathanyell ELLYARD (Born 17/11/1600 St Peters).
The only references I have for this Nathanyell are two marriage records in London, one to Elizabeth WHITE (Married 17/11/1620 Allhallows Lane, London), and another to a Margaret (surname unknown, married Abt 1628). I am currently considering that Nathanyell married twice, as I can find no other Nathanyell's around this time/region.
I have only one recorded birth for Nathanyell and Elizabeth, a Nathanyell ELLYARD (Born 31/3/1625 Whitechapel, Stepney, London). This child possibly died an infant.
I have two children recorded for Nathanyell and Margaret: Nathaniel ELYARDE (Born 6/12/1629 St Mary Whitechapel, Stepney, London) Andrew ELYARD (Christened 9/9/1632 Whitechapel, Stepney, London)
As yet, I have no further information on these lines, but for the next 100 years there were a lot of ELYARD/ELLYARD/ELLIARD's around the London area, most notably referring to "St Botolph Without Aldgate". It was in the mid-late 1700's when ELYARD's appear again in Kent, this time around Rainham and Gillingham. A Dr William ELYARD (Born 21/11/1771 London) married a Sarah GILBERT in Rainham in abt 1802, and then emigrated to Australia. THis is my direct ancestor.
Dr William ELYARD had a number of sons, and at least two (Alfred and Frederick) returned to england a number of times, fathering children in the Gillingham area. It is possible that you have descended from these.
The variations in spelling above are indicative of how poor the literacy was, since a child's name is often spelt differently than the father's surname on the SAME record.
One quick question:the place "St Botolph Without Aldgate" - can you tell me where in London this is, and what suburbs it is near?