Regarding your recent edits: the Wikipedia Manual of Style (see MOS:POSS) stipulates forming possessives of proper names ending in 's' with an apostrophe + 's': Lewis's. This is in accord with most modern style guides. You should revert your edits. -- Elphion ( talk) 22:32, 20 May 2022 (UTC)
Regarding your edits on 22 May 2022 to The Chronicles of Narnia, I have to ask: did you not read the note above? You appeal to the University of Guelph, but on Wikipedia the controlling document is Wikipedia's own Manual of Style, which editors are expected to follow. -- Elphion ( talk) 16:14, 9 June 2022 (UTC)
Regarding your recent edits: the Wikipedia Manual of Style (see MOS:POSS) stipulates forming possessives of proper names ending in 's' with an apostrophe + 's': Lewis's. This is in accord with most modern style guides. You should revert your edits. -- Elphion ( talk) 22:32, 20 May 2022 (UTC)
Regarding your edits on 22 May 2022 to The Chronicles of Narnia, I have to ask: did you not read the note above? You appeal to the University of Guelph, but on Wikipedia the controlling document is Wikipedia's own Manual of Style, which editors are expected to follow. -- Elphion ( talk) 16:14, 9 June 2022 (UTC)