I'd pretty much put all that in the biography, but I might break it down a couple of ways.
First, the final results I would place in the biography. Edwin and Eleanor, who lived in Christchurch, were married in 1907 (and where if possible) and then add <ref>citation</ref>.
Then, I would add a == Research Notes == section, and describe what sources were evaluated for the information you obtained, and which ones you were unable to find a source. Someone may later go along behind you, and find the source under a name with a slightly different spelling and it helps to know what steps were taken sometimes to follow in your footsteps, so to speak.