She gave the University of Toronto the Lillian Massey Building, which was opened in 1913.

He was the proprietor of the Great Shirt House, located at King and Bay streets in Toronto.

After their marriage, Treble gave up his business to attend to the finances of the Fred Victor Mission and the Deaconess House, charities supported by Lillian.

[5] Lillian subsequently moved to a health resort in Santa Barbara, California.

She died in 1915, leaving behind an estate of CA$2 million, including an island on Lake Rosseau in Ontario.