You've told us when Eva was born, but not where.  Is Emma the one aged 11 in 1901 in Bracebridge (or had she married by then)?
OK, this was their marriage so we have something to start from-
Marriages Dec 1907
**DRURY    Joseph Harry        Lincoln    7a   1161    Scan available - click to view
**DUNCOM__    Emma         Lincoln    7a   1161    Scan available - click to view
GADSBY    Adah         Lincoln    7a   1161    Scan available - click to view
THACKER    Edmund         Lincoln    7a   1161   
The marriage cert will of course give his parents' names.
Could he have come from Sussex?
DRURY, Joseph Harry   Christening
   Gender:   Male
   Christening Date:   10 Jun 1883   Recorded in:   Ripe, Sussex, England
         Collection:   BTs
   Father:   James DRURY
   Mother:   Emma
What was Joe's occupation - could this have been him (1901 census)?
Joseph Drury  18 Sussex Eastbourne East Sussex Eastbourne Railway Parcel Porter 
Ripe is about 10 miles from Eastbourne.