Its looks like Holton DAVIN married Marie Elizabeth TESSIER nee MORRISON although I cannot find a marriage record.
Marie Elizabeth DAVIN died in December 1/4 1884, age 44 (Ref: Dublin North 2 402).
In the 1901 Census, Holton DAVIN (49, Distiller, Widower), was living at house 21 in Smithfield (Arran Quay, Dublin), with
Step Daughters, Jane DAVIN (39) and Adelaide TESSIER (35), Niece, Rebecca MORRISON (30), and Servants, Martha DALY (76, Cook Domestic) and Mary CONRAN (Housemaid Domestic).
Adelaide TESSIER was Marie's daughter with her first husband, William Henry Cecil TESSIER so although I cannot find a marriage of Marie to Holton, the fact that Marie's daughter, Adelaide appears in the 1901 census as a step daughter to Holton is I believe sufficient proof of his marriaage to Marie.
Peter Harris
