Reginald Francis Hallward (1858 – 1948) was born at Sandown on the Isle of Wight. He was a stained glass artist, poet, painter and book designer. He trained at the Slade School of Art and the Royal College of Art, and may have been introduced to stained glass by Christopher Whall, who would remain a life long friend. Hallward had a long career and with the help of his daughter Patience was still working in stained glass into his eighties.
Reginald Hallward on Wikipedia
Arts & Crafts Stained Glass by Peter Cormack (Yale University Press for The Paul Mellon Centre for Studies in British Art, 2015)