 His eldest sister is Sandy Lamb Shan-Shan (林姍姍) who was also a DJ with Commercial Radio.His younger brother is Jerry Lamb Hiu-Fung (林曉峰) who is an actor and also DJ with Commercial Radio.Jan is married to retired female singer Cass Phang (彭羚) and they have two daughters – Lamb Wing (Jae Lamb) and Lamb Ching (Cloe Lamb).