I have my records now.
Mary (Ann) O'Phee was the daughter of John O'Phee and Julia McPherson, so she was born an O'Phee. Mary (Ann) O'Phee is the sister of my grandfather, Dawson O'Phee. Mary Ann's and Dawson's (and their 5 sibs)father, John O'Phee, was one of the three Irish brothers who immigrated to Canada.
Mary O'Phee did marry Richard Gill. The names of their children, according to my records, are the same as the names you posted, Orlo, Orville, Willis, Julia, but I don't have a Richard and the other girl's name that I have is Mary. Richard could have been born later and I don't know why the girl's name differs in our records. However, Isabel is a name that appears more than once in my family.
Barbara McPherson who married James Gill was the daughter of John McPherson who was the brother of Julia (McPherson) O'Phee, so Barbara was the cousin of Julia (O'Phee)Gill.
The O'Phee family did not technically come from Chatham. They were from Raleigh Township, which is just outside of Chatham and they were farmers.
This is great! I'm really happy to connect with someone who has this information. Thanks.