in 1924 weldon dalrymple-champneys married anne spencer pratt. he inherited the baronetcy on his father's death in 1930, becoming sir weldon dalrymple-champneys, 2nd baronet. anthony blunt later claimed that lady dalrymple-champneys was a low-level mi5 agent. she died in 1968 and in 1974 he married norma russell (née lewis) who had been librarian of somerville college, oxford, 1952–69; she died in 1997. there were no children of either marriage, so the baronetcy became extinct on sir weldon's death.