The craton is named after the Laurentian Shield, which in turn is named after the Laurentian Mountains, which were named after the Saint Lawrence River which in turn was named after Lawrence of Rome.
The craton is named after the Laurentian Shield. The Laurentian Shield in turn is named after the Laurentian Mountains. The Laurentian Mountains were named after the Saint Lawrence River. This Saint Lawrence River in turn was named after Lawrence of Rome.