Gertrude Jekyll VMH (November 29, 1843-December 8, 1932) was a British horticulturist, garden designer, craftswoman, photographer, writer, and artist.
Biography on Oxford Dictionary of National Biography:
https://www.oxforddnb.com/view/10.1093/ref:odnb/9780198614128.001.0001/odnb-9780198614128-e-37597

Thomas in the Character of Puss in Boots by Gertrude Jekyll
1869 / Oil on canvas / 30”x25” / Godalming Museum, Surrey, UK

Gertrude Jekyll on the Godalming Museum website: http://www.godalmingmuseum.org.uk/index.php?page=gertrude-jekyll

Further reading:
https://heritagecalling.com/2018/11/29/a-brief-introduction-to-the-remarkable-gertrude-jekyll/
https://gardenmuseum.org.uk/collection/photograph-album-of-prints-by-gertrude-jekyll/
https://gertrudejekyll.co.uk/paintings-by-gertrude-jekyll/