I've been digging around the Donbavand families recently, and found Robert Bingley Crabtree's first marriage, 3 Nov 1866, at St Mary's in Eccles, to Mary Jane Donbavand - Alice's sister. Mary Jane had been married before, to Henry Ball in 1861, but she claimed to be a spinster.
Robert Bingley Crabtree, full age, Bachelor, Blacksmith, 12 Elizabeth St Pendleton, Samuel Crabtree, Blacksmith Mary Jane Donbavand, full age, Spinster, , 12 Elizabeth St Pendleton, George Donbavand, Warehouseman Witness: Edward Turner, Frances Higginson
Mary Jane was born in Runcorn in Q1 of 1844. Alice's birth was registered in Chorlton, Q3 of 1859.