Although a lot of my research these days is chasing direct male line FAIRBAIRNs and RUNCIMANs for dna project representatives for wanted lines, I don't necessarily overlook the females of the species.
We have to have our uses after all.
The benefit in finding out who a Jane FAIRBAIRN, aged 83, born Kelso, lodging in the same boarding house in North Berwick as a George H FAIRBAIRN, 47 born Edinburgh, was in adding additional weight to the paper trail for the family of both Andrew & Margaret (HENDERSON) FAIRBAIRN, and his nephew John (marr. Sarah MORRIS), Jane being Andrew & Margaret's daughter (died 1874 North Berwick).
The FAIRBAIRN DNA Project is still looking for representatives for the lines mentioned here.