Relationship to head
Before 1789, relationship to head of household group (zu zhang). Beginning in 1789, relationship to household head. Each number stands for birth order recorded in the register, and each letter stands for a relationship to head (e=head, w=wife, q=... (view details)
Taken from: China Multi-Generational Panel Dataset, Liaoning (CMGPD-LN), 1749-1909 - Liaoning Basic File.