Percy Clough Ainsworth

Percy C. Ainsworth, father of Ruth, was a gifted and respected Methodist minister before his life was cut short by typhoid fever at the age of thirty-six. Ainsworth preached at Trinity Methodist Church in Felixstowe and at Wesley Chapel in Birmingham. A detailed biography can be found in the Fleming H. Revell edition of Ainsworth's The Pilgrim Church and Other Sermons. Links to this title and others are given below. A bibliography is available on WorldCat.org. High praise for Ainsworth's exemplary life and prose was published in the 5 January 1911 edition of The United Methodist on page 105. Ainsworth's papers and correspondence are held in the Suffolk Record Office of the National Archives. Ainsworth's notes and sermons from the defunct Wesley College at Bristol are apparently also in the possession of the National Archives who host this 14 megabyte PDF: Manuscripts and Other Collections at Wesley College, Bristol (page 17, line D2/25/1-5).

The Pilgrim Church and Other Sermons (Archive.org) (alternate link)
The Blessed Life: Short Addresses on the Beatitudes (Google Books) (Hathi Trust Digital Library)
The Threshold Grace (Hathi Trust Digital Library) (FullBooks.com)
A Thornless World and Other Sermons (Hathi Trust Digital Library) (Google Books)
St. Paul's Hymn to Love (Hathi Trust Digital Library) (Google Books)
Poems and Sonnets (Hathi Trust Digital Library) (Google Books)
The Silences of Jesus and St. Paul's Hymn to Love (Hathi Trust Digital Library)

Geoffrey Clough Ainsworth

Geoffrey C. Ainsworth (1905 - 1998), elder brother of Ruth, was a prominent scientist in the field of mycology (the branch of biology concerned with the study of fungi, including their genetic and biochemical properties, their taxonomy, and their use to humans). Biographical information can be found on CyberTruffle, CyberTruffle Cyberliber, and ResearchGate. Some of his publications include the following.

Ainsworth & Bisby's Dictionary of the Fungi (Google Books)
Fungal Diseases of Animals (Google Books)
The Fungi: An Advanced Treatise. Vols. 1-5. (Google Books)
Introduction to the History of Medical and Veterinary Mycology (Google Books)
Introduction to the History of Mycology (Google Books)
Introduction to the History of Plant Pathology (Google Books)

Oliver Lathe Gilbert

Oliver L. Gilbert (1936-2005), one of Ruth Ainsworth's twin sons, followed in his uncle Geoffrey's footsteps by gaining renown as a leading naturalist. Oliver Gilbert's speciality was the field of lichenology, the branch of mycology that studies lichens. His obituary was published in the Independent of 18 May 2005. The Lichenologist paid tribute to Gilbert in its November 2005 issue, and a stone bridge over Porter Brook outside Sheffield was dedicated to his memory in 2006.

The Lichen Hunters (New Scientist)
The Ecology of Urban Habitats (Google Books)
Habitat Creation and Repair (Google Books)
A Lichen Flora of Northumberland (Google Books)
Lichens (Google Books)

Christopher Gallard Gilbert

The other of Ruth Ainsworth's twin sons, Christopher Gilbert was a leading authority in the field of British furniture. His obituary was published in the 20 October 1998 edition of the Independent. Links to some of his works are given below; a full bibliography can be found in Volume XXXIII of the Furniture History journal of the Furniture History Society.

American Seating Furniture, 1630-1730: An Interpretive Catalogue, With a Forward by Christopher Gilbert (Google Books)
Dictionary of English Furniture Makers, 1660-1840 (Google Books)
English Vernacular Furniture 1750-1900 (Google Books)
John Channon and Brass-inlaid Furniture, 1730-1760 (Google Books)
Late Georgian and Regency Furniture (Google Books)
Life and Works of Thomas Chippendale (Google Books)
Pictorial Dictionary of Marked London Furniture, 1700-1840 (Google Books)
Selected Writings on Vernacular Furniture 1966-98 (Regional Furniture Society)