The name “Midland” comes from the railway company Midland Railway which later became the London, Midland and Scottish Railway or LMS for short. Trains from York Road served destinations to the north of Belfast.
The luxurious Midland Station Hotel on Whitla Street opened for business in 1898. It was badly damaged during an air raid in April 1941 (the Belfast Blitz). It was later rebuilt in a simpler, utilitarian form. The street-name Midland Terrace is now a reminder of the hotel and the old railway terminus, which was replaced by Yorkgate Station.
https://www.archiseek.com/2014/1898-midland-hotel-belfast-co-antrim/