Looking for Chalk of Essex

Hi,
This is all new to me but would love to look back at my family tree.
Have decided to start with my Dads side which is the Chalk name.
As far as I know my Dads dad is from the Parndon area of Harlow in Essex & I think there was around 11 of them?
I'm sure his name was Walter.
If anyone could help me tat would be great?
Thanks in advance.
Lisa