Question: Lady Margarita Elizabeth Rose Alleyne Armstrong-Jones is the only daughter of an English furniture maker who is the grandson of who?

Context articles: John McLean (furniture maker)
Jacob Cress
Arthur Brett and Sons
John F. Lutz Furniture Co. &amp; Funerary
Elizabeth Watts-Russell
Lady Margarita Armstrong-Jones
Percy Macquoid
Lewis Buckner
Robert Aagaard
David Armstrong-Jones, 2nd Earl of Snowdon

John McLean (born 1770; died 1825) was an English furniture maker and designer.
 He was recognized as one of the best of his era, representing the best in English cabinetmaking.
 Examples of his furniture can be found in the Victorian and Albert Museum, The California Palace of the Legion of Honor and the Library at Saltram, Devon.
Jacob Cress (born 1944, Norton, Virginia, United States), better known as Jake Cress, is a furniture maker in Fincastle, Virginia who is known for his interpretations of classical 18th century furniture.
 He considers himself to be a cabinet maker and not an artist.
 He also builds normal classical furniture, miniature furniture, and carves boxes, as well as decorative pieces.
 He also restores furniture.
 Additionally, he builds more modern pieces like country tables and desks.
 Cress works with mahogany, walnut, and cherry woods.
 His animated works include "The Decorator," "Alladin's Lamp," "Hickory Dickory Dock Clock," "Self-Portrait," and "Clock Face."
 Cress crafts each piece of furniture by hand in his shop without sketching the furniture before he begins working on it.
Arthur Brett and Sons is an English furniture maker.
 The company was founded in Norwich, Norfolk in 1870.
 The company creates bespoke furniture and architectural interiors such as paneled rooms and libraries.
 The antiques arm of the business became a separate business and closed in 2015.
John F. Lutz Furniture Co. & Funerary is a historic building complex located at St. Lawrence, Berks County, Pennsylvania.
 The complex consists of a combination house / shop, warehouse / showroom, and carriage house.
 The combination house / shop was built in 1878, and is a two-story, brick and frame building in the Italianate style.
 Two small two-story, frame additions were built in 1885 and 1910.
 The John F. Lutz Furniture warehouse / showroom building was built in 1900, and is a four-story building also in the Italianate style.
 A four-story brick addition was built in 1928 and a two-story, concrete block addition in 1955.
 The two-story, brick carriage house was built in 1896.
 It is also in the Italianate style.
 John F. Lutz (1863-1936) was a furniture maker, who also built coffins.
 As such, he also learned to be an undertaker and operated a funerary business.
 The John F. Lutz Co. remained in business until 1968, after which a furniture outlet occupied the warehouse / showroom building until 1990.
Elizabeth Rose Rebecca Watts-Russell (1833 – 7 October 1905) was a New Zealand community leader.
 As Elizabeth Rose Rebecca Bradshaw, she was born in Ireland in about 1833.
Lady Margarita Elizabeth Rose Alleyne Armstrong-Jones (born 14 May 2002) is the only daughter and youngest child of the Earl and Countess of Snowdon.
 She is the only granddaughter of Princess Margaret and the first of three granddaughters of the 1st Earl of Snowdon.
Percy Macquoid (1852–1925) was a theatrical designer and a collector and connoisseur of English furniture, and the author of articles, largely for "Country Life", and of four books on the history of English furniture, the first major survey of the subject, which have been reprinted and are still of use today: "The Age of Oak", "The Age of Walnut", "The Age of Mahogany" and "The Age of Satinwood", ending his surveys about the year 1800.
 These terms, particularly the first three, have become the standard terms for referring to these different periods and styles.
 Despite this respect for his observations and commentary, his historical research has often been queried.
 He collaborated with Ralph Edwards on "The Dictionary of English Furniture" (three volumes, 1924–1927).
 Macquoid's books were published by "Country Life".
Lewis Buckner (March 12, 1856—May 16, 1924) was an American house builder, carpenter and furniture maker.
 Born and raised a slave as a child, Buckner was freed in 1865 and later apprenticed to a furniture maker.
 He became one of several successful African-American construction entrepreneurs in late-19th century Sevier County, Tennessee.
 At least fifteen homes that were either built by Buckner or are believed to have been built by Buckner are still standing, two of which are listed on the U.S. National Register of Historic Places.
Robert Aagaard OBE JP ( ; 27 June 1932 – 1 April 2001) was an English furniture maker and conservator, magistrate, and founder of the youth movement Cathedral Camps.
David Albert Charles Armstrong-Jones, 2nd Earl of Snowdon (born 3 November 1961), styled as Viscount Linley until 2017 and known professionally as David Linley, is an English furniture maker and the former chairman of the auction house Christie's UK.
 The son of Princess Margaret, Countess of Snowdon, and of Antony Armstrong-Jones, 1st Earl of Snowdon, he is a grandson of King George VI and is 18th in line of succession to the British throne, the first in line who is not a descendant of Queen Elizabeth II.