Born in Redruth, Cornwall, the artist daughter of Sampson T and Fanny Rowe, and the older sister of Louisa C G ROWE, Gertrude exhibited two paintings at the RBA in 1895-6 in the family name. She married the artist Algernon Mayow TALMAGE in 1896, with whom she helped run his school of painting. In 1901 the couple, with their two children, were living with Gertrude's parents in St Ives. They parted after Talmage left for London in 1907.

In 1914 and 1917 she exhibited at the RA. As Annie C G Talmage, she died in Falmouth in 1941, aged 74.

2014: Researcher Christopher Garrett is currently endeavouring to ascertain further information regarding the children of Algernon Talmage and Gertrude Rowe.