1891 census Dawn Bothwell
SHAW
John, 42, Ontario, parents b Ireland
Emma, 30,
Andrew, 3
Orval, 2

1901 census Dawn Bothwell
SHAW
John H, 2 Feb 1854, 47
Emily, 26 July 1860, 40
Andrew, 20 Aug 1885, 15
Orval, 28 Apr 1889, 11
Ruth, 29 Aug 1893, 7
Ervin, 14 May 1899, 1

1901 census Chatham Bothwell
SHAW
George, 8 Feb 1872, 29
Helena, 11 May 1880
Orval G, 13 Dec 1898
George, 9 Aug 1900

Those are the only 2 Orville/Orval Shaws I found on the census. None with brother Milton.

Only Milton Shaw I found on 1901 census was born 1844.

I read the accounts of The Hermit from Skunk's Misery but it doesn't give much information [as you know already].

If he was in the US for some of the time, maybe he got married there?