How did Saint Mark the Evangelist influence others?

A:

When we speak of St Mark the Evangelist, we mean the author of the gospel that now bears his name, whether or not this was the person called Mark mentioned in the epistles. The reason for this qualification is that all the New Testament gospels were originally anonymous until attributed to Matthew, Mark, Luke and John later in the second century. By this time, no one could have known who wrote any of the gospels, and that attribution of one gospel to Mark is purely speculative.

When the three synoptic gospels (Matthew, Mark and Luke) are laid in parallel and read synoptically in the Greek language, it becomes clear that there is a literary dependency among them. New Testament scholars have established that Mark was the first of the gospels to be written, and that Matthew and Luke were substantially copied from it. John's Gospel was, in turn, loosely based on Luke, with some material taken direct from Mark. Thus St Mark the Evangelist can be seen to have influenced the authors of the other three New Testament gospels.