What is XXX's brothers name?
Penleigh Boyd
Penleigh Boyd was a member of the Boyd artistic dynasty: his parents Arthur Merric Boyd (1862--1940) and Emma Minnie Boyd (née à Beckett) were well-known artists of the day, and his brothers included the ceramicist Merric Boyd (1888--1959) and the novelist Martin Boyd (1893--1972).
Martin Boyd