Joseph Adair ( ? -1908) is listed in “The index of collectors in the Welsh National Herbarium‘ and his date of death is given as 1908. He produced a book entitled “Observations on the flowering plants of West Cumberland” in 1882 and contributions are to be found in the Journal of Botany e.g. Vol 42, 1904 see :- http://www.archive.org/stream/journalbotanybr05unkngoog#page/n335/mode/1up
Joseph Adair is listed in the 1891 census living in Egremont, which would ‘fit’ with the label (see adjacent jpg ) from one of his sheets at H@H and this Adair was born circa 1829 and educated at the Quaker School in Wigton, Cumberland. He is described in the 1851 Census as a ‘distributor of stamps’, and living in Whitehaven
He married Dorothy Davidson in 1853, and was still in Whitehaven in 1871 but now described as a ‘distributor of stamps’ and draper. From 1881, he is recorded as living in Egremont, and described as the managing director of Wandham Iron Ore Mining Company. This was also true in 1901. He died in 1907 (4th quarter).