My maiden name is Wallak ... but my great grandfather was
adlebert (albert) Wolak. Grandparents Blazius and Hedwig.
There were 16 live births in this family and it seems the midwife often misspelled the name but parents were not literate. When B lazius (son of A.) died, children were dispersed to orphanages which was custom of the time I gather. Sad. So we all ended up spelling it Wallak ...
there must be aqbout 5 childdren per adult Wallak in our line alone. Many of the other older siblings continued Wolak and various s0pellings. Sure makes it tough to trace all thosecousins!