Looking for descendants of Mary North Clark, b.1850-d.1929 London, Ontario, Canada

I am looking for descendants of Mary North Clark--I have a family photo in which she appears but I don't know which woman she is. In the photo is her father, John North and all the siblings. Here's her Info: (I'd love a photo of Mary-will share the family photo!)

1. WILLIAM1 CLARK was born 26 Oct 1842 in Scotland, UK, and died Bef. 1906. He married MARY NORTH 03 Jul 1869, daughter of JOHN NORTH and MARY SPENCER. She was born 18 Oct 1850 in Angel Place Boro, LONDON, England, and died 22 Mar 1929 in London, Ontario, Canada.

More About MARY NORTH:
Census: 1851, 1851 British Census: London, England.
Immigration: 07 Jul 1867, Immigrated from London, Eng., to NY City

Children of WILLIAM CLARK and MARY NORTH are:
i. MARY JANE (MINNIE) CLARK b. 10 May 1870, , , , USA.
ii. HERBERT CLARK b. 25 Apr 1873, , , , USA; d. Deceased.
iii. GRACE CLARK b. Abt. 1877, , , , USA; d. Deceased.
iv. ETHEL CLARK b. 02 Jun 1878, , , , USA; d. Deceased.
v. KATIE CLARK b. Abt. 1881, , , , USA; d. Deceased.
vi. IRENE CLARK b. 08 Apr 1888, , Ontario, Canada; d. Deceased.