Hope this link helps. It seems Henry Owen was a hereditary Burgess of Pool.
https://archive.org/stream/collectionshisto19powyuoft/collectionshisto19powyuoft_djvu.txtAlso info on the Parry family of Leighton.
You will need to go to tools and 'find' type Henry Owen.
WELSH POOL. 223
PARRY OF LEIGHTON.
EDWARD PARRY (son of Edward Parry of the Dairy
and Anne his wife; see supra, p. 215), Hereditary
Burgess ofWelshpool, 1773; married Anne, daughter of
Thomas Vaughan of Trelystan. Will dated June 1774;
proved at Doctors' Commons in November following.
In it are mentioned his four sons Edward, David,
Thomas, and John and three of his daughters Jane,
Mary, and Elizabeth. He died 26th June 1774, and his
wife died 24th October 1773, and they were buried at
Welshpool. He left eight children
i. MARY PARRY (daughter of Edward Parry of
Leighton and Anne his wife), born 15th April 1748;
married, 7th February 1780, at Trelystan, Henry Owen
of Pool (Hereditary Burgess, 1 794). She died and left
three children
1. John Owen of Pool, an Hereditary Burgess, 1822 ; died at
Welshpool, unmarried.
2. Mary Owen, died unmarried.
3. Thomas Owen, an Hereditary Burgess of Welshpool, 1822 ;
married, at Mitcham, Surrey, in 1830, Charlotte Matilda,
second daughter of James Moore of Manor House, Mit-
cham, and died leaving four children
i. Frederic Owen,
ii. Henry Owen, married to Emily, daughter of T. B. Barrett,
and died without issue,
iii. Matilda,
iv. Emily, married, and in Australia.
ii. JAKE PARRY (daughter of Edward Parry of
Leighton and Anne his wife)/born 16th April 1752 ;
married at Trelystan, 1st June 1772, William Bryan
of Forden, and died 16th February 1846, and left one
son and two daughters
1. Edward Bryan, married Sarah, daughter of Thomas Davies
of The Moors, and died 3rd March 1858, leaving three
daughters
i. Jane Bryan, married, on 20th June 1852, Cornelius Pugh,
then of Wernllwyd, and now of Oak Villa, Leighton (see Pugh