I am stuck trying to find a John Humphreys Jones married to Elizabeth ?

Yes I have all that in my tree and how the Owen name came down and was added to Arthur Humphreys name when he took over the Owen’s lands. His brother Edward had a farm in NZ he called by the same name as the Owen’s farm.

 

I will do that and upload it as a file so everyone can see.

 

This is the family Thomas D. Jones is 1st cousin to Arthur Charles Humphreys who added Owen to his name. (1836-1905)
The Owen family were descended from Cadifor ap Dinwal, Lord of Castell Hywel. The earlier generations were known as Owen of Glyngynwydd or as Owen of Cefn yr Hafodau. The Owen family fortune was built from the start of the 18th century with shrewd investments in land, mining and by marriage.
Owen Owen (d. 1719) owned property scattered around Montgomeryshire. Following his death, the estate was inherited by his son David Owen (1700-1777). David's eldest son and heir was Owen (1723-1789). By his marriage to Anne, daughter and heiress of Charles Davies of Llifor, he acquired the estates of Rhyd y carw in Trefeglwys and Glanrhiew and Tyn y coed in the parish of Berriew. In around 1760 he moved to Tyn y coed.
David Owen's (1700-1770) third son, William Owen (c. 1735-1778), was a captain in the navy. On the 30th September 1767 he was granted an island in Passamaquoddy Bay by Lord William Campbell, the British Governor of Campo Bello. William was only on the island for a year but pursued the colonization of the island in 1770-1771, creating the foundations upon which later generations of the Owen family built upon.
Owen Owen (1723-1789)'s eldest daughter Mary (1745-1814) married Thomas Jones of Garthmyl Hall, Montgomeryshire. His second son, David (1754-1829), emigrated to New Brunswick, Canada, and controlled Campo Bello from 1787 until 1829, before the land passed to Captain William's second son, Admiral William FitzWilliam Owen. His eldest son, Arthur Davies Owen (1752-1816) acquired Lower Garthmel in 1796 and erected a mansion on the land which became known as Glansevern. Cefn Hafodau had been sold during this period. On Arthur's death without issue, the estate passed to his brother, William Owen (1758-1837), who retired there in 1821 from London where he was a distinguished barrister. William was chairman of the Montgomeryshire Quarter Sessions, a Whig, and was strongly in favour of the abolition of the Great Sessions of Wales. In 1823 he married Anne Warburton (1783-1876).
According to the 1873 return of owners of land, Anne Warburton Owen, of Glansevern owned an estimated 4,482 acres in Wales (all in Montgomeryshire) with an estimated rental of £4,368.
On Anne's death, in the absence of an heir, Glansevern estate devolved upon her husband's great-grand nephew, Arthur Charles Humphreys (1836-1905), great-grandson of Mary and Thomas Jones. On inheriting Glansevern, Arthur settled there and took on the additional surname of Owen. He was Liberal M.P. for Montgomeryshire 1894-1905, first chairman of the Mongomeryshire County Council, and played a prominent role in the politics of Wales and Montgomeryshire. He was succeeded by his son, Arthur Erskine Owen Humphreys-Owen (b. 1876), whose family remained at Glansevern until 1950. His son, Stephen P.F. Humphreys-Owen (1908-1960) died unmarried and the family became extinct in the male line.
In April 1951 the mansion and 110 acres of land were sold to Mr Robert Gordon Barker, a timber merchant.

 

Humphreys-Owen, Arthur Charles, M.A., Trin. Coll., Camb., 1865, from Harrow, examiner in civil law Camb. Univ. 1869-70, 1871-3, in law tripos 1878-81, J.P., D.L. co. Montgomery, assumed the additional surname of Owen in 1876, a student of Lincoln's Inn 26 May, 1860 (then aged 23), called to the bar 30 April, 1864 (eldest son of Erskine Humphreys, Esq., of Harrow, Middlesex) ; born 9 Nov., 1836; married 27 Jan., 1874, Maria, eldest dau. of late James Russell, Esq., of the Inner Temple, Q.C., and has issue.

 

Tyrwhitt connection is another relation but I don't know how they are related.

Code:

https://www.historyofparliamentonline.org/volume/1790-1820/member/jones-thomas-1765-1811

 

So what I have worked out:
Sir Thomas Jones had a son Rev. Dr. Edward Jones who had a daughter Katherine (m. Booth) who had a daughter (m. Captain Tyrwhitt) whose son Sir Thomas Tyrwhitt inherited the Jones property and became Tyrwhitt-Jones. Some how they are related to Thomas Devereux Jones and his family.

Mary Owen married Thomas Johnes and had a son Dr. Edward Johnes, MD) who married Mary Davies. They had a large family but one daughter Eliza Jones married Erskine Humphreys. They had 2 children Arthur Charles Humphreys who became Humphreys-Owen when left farms originally from Mary Owen's family. Their other son Edward Wingfield Humphrey's also came to NZ and married but never had children. According to records Thomas and his brothers and sisters were 1st cousins to Edward and Arthur but I am not sure how as Eliza did not have a sister Elizabeth or John.

Charles Gardiner Humphrey married Martha Anne Bright and had number of children, Samuel Humphreys married Anne Popham who were the parents of Erskine Humphreys and they only had Erskine and a brother Charles William Humphreys who never married living 1807-1826.

Even going through Samuels brothers and sisters to see if they married a Jones and were John Humphreys Jones (Thomas's father) I can find no one and while I know Thomas's mother was Eliz. on the birth certificates I cannot find a marriage certificate for John Humphrey Jones and Elizabeth. They had their children in the Shropshire area. For John to have the name Humphrey I am assuming this is a family name and hence how they are related to Arthur and Edward Humphrey. Any help would be appreciated. Like I said I am unable to come to Wales or the surrounding area in England to look at records myself.