barlow has been married twice and fathered seven children. in 1954 he married ruthala salaman, daughter of m.h. salaman. they had four daughters: rebecca, natasha, naomi and emily. they were divorced in 1970. in 1980 he married miranda, daughter of john weston-smith. they had one son, oscar, and two daughters, ida and pepita. barlow is the great-grandson of charles darwin and thus part of the darwin — wedgwood family.