Searching for information on a possible adoption from early 1900s near Parkhill Ontario.

Irene Beatrice Laura Kading, born 12-15-1904, may have been adopted by or given to William Kading & Ellen Mains-Kading when she was a small child.

Ellen worked at the sanitorium in London, Ontario during this period. William died of TB in 1911.

Ellen Mains-Kading (1868) is the daughter of William & Margaret Mains of Hullett/Hay Twp.
William Kading (1863) is the son of August Kading & Maria/Mary Caroline/Molly Blumenstein-Kading.of Blenheim/Blyth/Stephen Twp.

Any information appreciated!
Thanks.