More Puzzling over DeLong Family

I'm still finding conflicting information on my gggrandfather, Peter DeLong, born 1838 in Whitby, Ontario. He married Susannah Powell. Some say that he died in Michigan while other family members are adamant that he died in a blizzard in Bonilla, SD. I did check the Michigan death records and I think that that is another Peter DeLong. I don't have that site handy to give details at this moment. I am willing to admit to family errors and go along with the Michigan death, but still I haven't found definite proof.

Here is a handwritten "Recollections of Andrew DeLong after Edna's (wife, Edna Draper) passing", written by Catherine DeLong (Pratt). Catherine is/was the daughter-in-law of Andrew, married to his son Carl. I received this from Doreen Martichenco.

Andrew...
Born 1871, April 24, Brookland, Ontario, Whitby, Township
Emigrated in Spring of 1880 to Michigan then to S.Dakota. Father (Peter) died in 1885. In 1890 went to Oregon coming back to SD in a couple of years
Came to Canada in a wagon train in 1902, ettled in the Bettleford district.
Married Edna Draper in 1905 and lived on the homestead until 1916. They then travelled to Virginia staying there fourteen months. He returned and settle three miles north of Prongua. Here he lived until his wife passed away in 1945 after a long illness.

Doreen adds..."He took a trip to Oregon while living with us to visit relatives there. Edna DeLong (Draper) family did live in Wisconsin before moving to Nebraska. Andrew joined their wagon train in SD to come to the Battleford area. I do not know the reason Susan Powell DeLong's family moved to SD. My mom and dad took several trips to visit somee cousins. Sorry I can't help you with any information about your great grandmother, Catherine."

Another source...not sure who, only that it was put together by information from Edith DeLong Evans. Edith was the daughter of Edward Peter DeLong, son of Peter and brother of my ggrandmother, Catherine Elizabeth DeLong Daugherty. She has James DeLong as Peter's father, whereas James is Peter's uncle. "Peter DeLong was born on Nov. 20, 1838. There's no date of death recroded, for he disappeared while walking to Bonnilla SD in a blizzard.

Then there is the story of Peter being an inventor and dying when a railroad coupler misfunctioned, causing his death. Again, I don't have valid sources of proof for this. I do know that a Peter DeLong owned land in Hand county. I had originally thought that it was Peter's father, also a Peter. But reading that person's death certificate shows he died of fairly normal conditions. So many questions. I'm hoping there's someone out there to help me with answers.