Manufactured during the 70s, there were three models of Morris Marina. There was the 1.3, 1.8 and the TC. I had the 1.8 model, as it used to get more miles per gallon than the 1.3. The TC model was based on the MG B sports car. Described by some as a 'skip on wheels', the Morris Marina was thought to symbolise the problems of the industry at the time. The Marina was followed up by the Ital in the 80s, which was on the end of similar criticism.
It was available in brown, beige, dark limeflower green, dark blue and an oh-so 70s purple for those at the forefront of fashion. It was intended to be a competitor to the Ford Cortina (and to some extent the Escort); the Vauxhall Viva and Vauxhall Cavalier; the Hillman Avenger and Hunter. As you might imagine, the Marina was not intended to be visually groundbreaking - its Austin Allegro stablemate took care of that. But despite all this, the Marina was hugely popular. I bet someone in your family had one!