Robinson was born in Belfast, Northern Ireland, the son of a house painter. He trained at the Belfast College of Art. He took part in boxing matches, under the name "Boyo Marko", and later worked as a merchant seaman. Robinson's first exhibitions were in Belfast during World War II. He became better known through over 20 exhibitions of his work at the Oriel Gallery in Dublin, where he used the upstairs framing room as his studio. As well as a steady stream of sales of individual pictures. The Royal Hibernian Academy was another prominent venue for exhibition of his work. He also had a long record of one-man-shows in other venues both in Ireland and elsewhere. Markey's designs for stained glass can be seen over the entrance to the Oriel Gallery and also in the window designed by him in the late 1970s. More than 400 Markey Robinson works can be seen in the online archive catalogues of Whytes Irish Art Auctions His paintings cover a wide range of subjects, but there are certain recurring features. These may appear separately or in combination.
- Village scenes of white cottages in which the white gable end of the cottage is distinctive. Frequently, there are no windows visible in these cottages.
- Women wearing dark shawls - no facial features are visible
- Sailboats, normally with dark brown sails, or sometimes white sails
- Jugs feature prominently in his still life paintings
- Circus clowns