Interactive tree of … Firth
1982–♂ Davis Michael Hollowday
1985–♀ Sarah Elizabeth Hollowday
1953–♀ Jane C. Thurwell
1950–♂ Philip M. Hollowday
1922–♂ Norman G. Thurwell
–♀ Doris Salmon
–♀ … Firth
–♂ … Thurwell