As far as I know! The first solid references are in Bolton, and the only references elsewhere are JJD's army records. He signed up in Manchester, so might be the son of the Joseph who is a labourer there in the 1861 census. Joseph claims to be from Warrington, as is his wife Margaret, who is too young to be JJD's mother. JJD was born 1828-30 according to pay book mentioning his recruitment.
I've decided to have a Big Push on the Donbavand families. The first stage is collecting what data there is. Next step is linking the various family groups.