1910 BSD has at number 24 Crosby Street : Anderson, Wm., painter
According to census Mary Ann Anderson was married 26 years, ie married around 1885.
The only marriage I can find in that year is :
William John Anderson to Mary Ann Lewis on the 3rd April 1885 at Hillhall Presbyterian Church, in the Parish of Lambeg Civil District Lisburn County Down.
OTTO