I don't know if anyone can help me??
I'm trying to find out more about my grandfather's side, I have been lucky enough to track down a few relatives in the USA and one in the UK but I am really stuck now!

My grandfather was born in 1925 as Joseph Harbron Applegarth, Father was Joseph Harbron Applegarth and his mother was Klavida Panfilonova Ekonomova who was born in Constantinople in 1900/01.... This is where I struggle!!
I know Klavida had 3 children (one in Batum, now Batumi,and two in the Manchester area) with Joseph and then went on and had 2 boys David Zeitlin and Michael Applegarth in France (my grandfathers half brothers), I can't find her birth or death certificate or anything on her or where to look?? I have her marriage certificate with Joseph and I know her parents were called Panfil/Pavel and her mother was called Elisaveta that is all :(
Can anyone help??