Uncertain Clues

Doing more digging on Paul Burck I found some things but am not certain they are correct however I am hanging onto them hoping I will find the piece that fits them all together. See an earlier post about Paul Burck for more information.
I suspect Paul's wife Anna was a Heiman from the CA death index and I know she had a brother that lived in Chicago on Menard Ave. per a letter from 1936. I found an obit in Chicago for a William Heiman in 1956 that mentions a sister Anna Burck in Concord, CA. I then find his family on the 1930 census but that address is 1919 Orchard St., in Chicago but it is 6 years prior to the letter. I then found a WW2 registration card for William Heiman living at 4038 N. Menard Ave. and the date of this is Apr 1942. The letters I have for Paul are in Pittsburg, CA which is close to Concord. On the California voting index I find him in Pittsburg in 1942 then in 1944 I found him in Concord.
Then some border crossings going through Sweetgrass, Montana from Lethbridge, Canada to Great Falls, Montana. One is under the name Paul Gburek in 1909 & the other one says Paul Burak in 1910 but all other info such as age & place of birth fit and both say seaport landing was Oct 1907 in Quebec but the 1910 one also says he was previously with his brother Felix in Canada so now that's another person to try and find. On the same day in 1909 I find Mike, Annie & Katie Popp going from the same town in Canada to the same town in Montana. Paul & Mike are both coal miners. On the CA death index I had found Kathryn Washburn that said mother's maiden was Heimann & her maiden name was Papp. I then find 2 death listings for what I believe are the same person, just different spellings, Mike Papp death on 4 Jul 1909 and Mike Pope same day. So I'm thinking Paul married Anna after the death of Mike.
These are the latest clues I have on Paul and his wife who I know is related but I'm still working on the how. These are sounding like I'm on the right track but I still need more to be certain.