Hello,
My Grandmother was born in 1875 in Miraticy, Belarus.?
She has a polish identification dated 1928. ( Dowod Osobisty)
My mother was born in 1921 in Udryck, Poland.
She was married later on to a polish citizen.
My mother spent approx 3 years in a displaced person camp in Austria.
My mother, grandmother, aunt and brother immigrated to canada in 1948.
My mother met my father in 1961 who was from Latvia but was a Canadian citizen at the time of my Birth.
My Aunt received a polish passport while in Austria in 1948.
I have not done any research yet to see if my mother also applied for a passport at the same time as they were both in the same camp in Austria.
My mother became a canadian citizen in April 1959.

Is this enough to proceed with a Polish Citizenship by Descent.

Any advice, help or links to a good company which processes these applications would also be helpful.
Thanks.