Robert Welles, 8th Baron Willoughby de Eresby
Robert Welles, 8th Baron Willoughby de Eresby and 8th Baron Welles (died 19 March 1470), was the son of Richard Welles, 7th Baron Welles, and Joan Willoughby, 7th Baroness Willoughby de Eresby.
He was the prime mover in an uprising against Edward IV in 1470, although his actions were possibly orchestrated by Richard Neville, 16th Earl of Warwick.
Christopher Willoughby, 10th Baron Willoughby de Eresby
Sir Christopher Willoughby, "de jure" 10th Baron Willoughby de Eresby (1453 – between 1 November 1498 and 13 July 1499), was heir to his second cousin, Joan Welles, 9th Baroness Willoughby de Eresby, in her own right Lady Willoughby, as well as great-grandson and heir male to William Willoughby, 5th Baron Willoughby de Eresby.
Christopher Willoughby was also heir to his elder brother, Robert Willoughby, who died unmarried and underage on 24 March 1467.
He was unable to enjoy his inherited title as a result of the attainders of his cousin Joan Welles' father, Richard Welles, 7th Baron Welles, and brother, Robert Welles, 8th Baron Willoughby de Eresby.
Peregrine Bertie, 13th Baron Willoughby de Eresby
Peregrine Bertie, 13th Baron Willoughby de Eresby( 12 October 1555 – 25 June 1601) was the son of Catherine Willoughby, 12th Baroness Willoughby de Eresby, and Richard Bertie.
Bertie was Lady Willoughby de Eresby's second husband, the first being Charles Brandon, Duke of Suffolk.
Peregrine Bertie's half- brothers, Henry and Charles Brandon, died as teenagers four years before his birth.
His sister Susan married the Earl of Kent and then the nephew of Bess of Hardwick.
Owing to religious politics, the parents had to move outside England and the boy was born at Wesel on the River Rhine.
María de Salinas
María de Salinas, Baroness Willoughby de Eresby( ca. 1490 – 1539) was a noblewoman from Spain.
She served as confidante and lady- in- waiting to Catherine of Aragon, Queen of England.
Joan Welles, 9th Baroness Willoughby de Eresby
Joan Welles, "de jure suo jure" 9th Baroness Willoughby de Eresby (d. before 23 January 1475), inherited the baronies of Welles and Willoughby at the death of her brother, Robert Welles, 8th Baron Willoughby de Eresby, in 1470.
Clementina Drummond-Willoughby, 24th Baroness Willoughby de Eresby
Clementina Elizabeth Drummond- Willoughby, 24th Baroness Willoughby de Eresby( 2 September 1809, London – 13 November 1888, Grimsthorpe Castle) was a" suo jure" British baroness.
She was the daughter of Peter Robert Drummond- Burrell, 22nd Baron Willoughby de Eresby( died 1865) and Sarah Clementina, née Drummond( died 1865).
On the death of her brother, Albyric Drummond- Willoughby, 23rd Baron Willoughby de Eresby, in 1871, the Barony of Willoughby de Eresby fell into abeyance between her sister, Charlotte, and her.
On 13 November 1871, the abeyance of the barony was terminated in her favour.
She was born and baptised with the name of Clementina Elizabeth Burrell- Drummond.
And on 4 May 1872, her name was changed to Clementina Elizabeth Heathcote- Drummond- Willoughby by Royal Licence.
She married Sir Gilbert John Heathcote, 1st Baron Aveland on 8 October 1827 in Drummond Castle.
They became parents of: She was also Joint( 1/4) Hereditary Lord Great Chamberlain from 1870 to her death.
She was buried in Normanton, Rutland.
Joan Willoughby, 7th Baroness Willoughby de Eresby
Joan
Willoughby," de jure suo jure" 7th Baroness Willoughby de Eresby( c.1425- d. before 13 February 1462) was an English baroness in her own right.
William Willoughby, 5th Baron Willoughby de Eresby
William Willoughby, 5th Baron Willoughby de Eresby KG( c. 1370 – 4 December 1409) was an English baron.
Jane Heathcote-Drummond-Willoughby, 28th Baroness Willoughby de Eresby
Nancy Jane Marie Heathcote-Drummond-Willoughby, 28th Baroness Willoughby de Eresby (born 1 December 1934) is an English peer.
She is a holder of the office of Lord Great Chamberlain, which is majority controlled by the 7th Marquess of Cholmondeley.
Minamoto no Chikako
She was the mother of Prince Morinaga.

Question: Who is Joan Welles, 9Th Baroness Willoughby De Eresby's mother?
Answer: Joan Willoughby, 7th Baroness Willoughby de Eresby