Cathy, Yes, there are 2 Oliver McAdams.
Oliver McAdams born abt 1868, died 1933, Son of Duncan E. McAdams and Harriet Elizabeth Ferdon.
And his son Oliver McAdams born May 1898 died 1963.
https://www.familysearch.org/tree/person/details/MT2M-3JD
The sources for Oliver McAdams and his wife Katherine "Katie" Young show that there were 11 children born to their marriage.
The Find a Grave record for Oliver McAdams senior has his birth date incorrect, as he is found on the 1870 Census with his parents Duncan and Harriet described as age 4, he cannot have been born in 1872.
https://www.findagrave.com/memorial/122762038/oliver-i-mcadams
also shows his son Oliver McAdams.
Adding the sources for Oliver born abt 1868 and his family will make the family relationships clear.
I hope you feel better soon.