Try
click here type Birkenhead
select Town maps on right
1876 MAP
Some coordinates for Priory area you can use( increase or lesser to move up/down, left/right
Birkenhead Arms 332600_388600
Butchers Arms & Castle Hotel 332600_388700
Castle Hotel California 332700_387600
County Arms 332800_388500
Denbighshire Inn 332700_388500
EgertonHotel 332600_389300
Golden Lion & Duke of Edinburgh 332600_388400
Great Western Hotel 332800_388800
Ivy Hotel 332800_388700