This source gave the date of marriage but not the place.
↑Various. (No title). (Unpublished collection of memoirs, recollections and informat histories, as well as an autobiography by Mahonri Moriancumer Brown).
On October 17, 1876, Mahonri married Amy Viola Fackrell in the Endowment House in Salt Lake City. They had known each other their entire lives. Amy was a local Bountiful area girl.