You can find them in the 1911 census. Entered Canada 1906. Anglicans.
19 232 Kelly Robina 517 Jasper Avenue [now part of Riverton Av] F Head W Mar 1867 44
20 232 Kelly Rubie F Daughter S Oct 1892 18, bookkeeper
21 232 Kelly Willie M Son S Dec 1894 16, laborer for telephone company
22 232 Kelly Leopold M Son S Nov 1896 14
23 232 Kelly Stanley M Son S Jan 1898 13
24 232 Kelly Horace M Son S Dec 1909 1
1911 / Manitoba / Selkirk / 54 Winnipeg / page 23

Riverton Avenue is now in East Kildonan, which is part of Wpg.

and this could possibly be George.
1911 / Manitoba / Selkirk / 53 Part of Winnipeg / page 11
23 116 Kelly George M Lodger S Feb 1890 21, b. Isle of Man, entered Canada 1906, telephone operator for provincial government.
Lodging with the Sturgeon family, also in Selkirk district ((Wpg).

From Manitoba Vital Stats"
Possible marriage;
GROOM'S LAST NAME: KELLY
GROOM'S GIVEN NAMES: GEORGE ALFRED
BRIDE'S LAST NAME: Sturgeon
BRIDE'S GIVEN NAMES: MINNIE
DATE OF MARRIAGE: 24/06/1911
PLACE OF MARRIAGE: WPG
REGISTRATION NUMBER: 1911,005608

GROOM'S LAST NAME: ERICKSON
GROOM'S GIVEN NAMES: JOHN
BRIDE'S LAST NAME: KELLY
BRIDE'S GIVEN NAMES: RUBY ETHEL
DATE OF MARRIAGE: 15/11/1911
PLACE OF MARRIAGE: WPG
REGISTRATION NUMBER: 1911,003909

GROOM'S LAST NAME: KELLY
GROOM'S GIVEN NAMES: Leopold FREDERICK
BRIDE'S LAST NAME: ALEXANDER
BRIDE'S GIVEN NAMES: ELSIE MINNIE MAY
DATE OF MARRIAGE: 30/03/1921
PLACE OF MARRIAGE: E KILDONAN
REGISTRATION NUMBER: 1921,014304

GROOM'S LAST NAME: KELLY
GROOM'S GIVEN NAMES: WILLIAM LEONARD
BRIDE'S LAST NAME: DAWSON
BRIDE'S GIVEN NAMES: NELLIE ELIZABETH DATE OF MARRIAGE: 14/07/1921
PLACE OF MARRIAGE: DAUPHIN
REGISTRATION NUMBER: 1921,034528

GROOM'S LAST NAME: KELLY
GROOM'S GIVEN NAMES: STANLEY VICTOR
BRIDE'S LAST NAME: SAGE
BRIDE'S GIVEN NAMES: GERTRUDE DATE OF MARRIAGE: 13/10/1917
PLACE OF MARRIAGE: WPG
REGISTRATION NUMBER: 1917,057084

Deaths;
LAST NAME: KELLY
GIVEN NAMES: ROBINA
DATE OF DEATH: 18/12/1920
AGE: 53
UNITS OF AGE: YEARS SEX: FEMALE
PLACE OF DEATH: WPG
REGISTRATION NUMBER: 1920,061184

You might query this list for a lookup in Henderson Directory (phone book) to see how long they lived on Riverton (interestingly my parents once lived on Riverton also!).

WW I services
George, b. 14 Feb 1890, Douglas, Isle of Man, living at 332 McDermott Ave, Wpg, sign painter, lists wife Minnie as next of kin.
Leopold Frederick, b. 13 Nov 1896 Douglas, Ilse of Man, printer, single, living at 517 Jasper Ave, Wpg lists mother
of same address
William Leonard, b. 2 Dec 1897, Douglas, I of M, machinist, single, of 517 Jasper Ave, Elmwood (close to Kildonan) lists mother
See:
http://www.collectionscanada.gc.ca/databases/cef/index-e.htm...