Near the end of the eighteenth century young Olof Ericsson married, and built him a home on that part of the family land where the old barn had stood. He had three children, a daughter named Caroline, and two sons, named Nils and John. One day the mother heard the old legend and identified the place with her husband's house, and so became convinced that her boys were to become world famous. They came of very good stock, and the family traced their ancestry back to the great Leif Ericsson, son of Eric the Red, who had been the Norse discoverer of America.

Olof and his wife Brita were devoted to their children. Olof was part owner of a mine at the town of Langsbaushyttan near which they lived. The children had a governess for a time, and father and mother taught them what they could, but the most of their days were spent playing in the thick pine woods along the shore of the little Lake Hytt which lay in front of their house. Sometimes Olof took the two boys with him to the mine, and from almost the first visit a perfect passion for machinery took possession of the younger boy John. After that he was always playing with pencils and paper, with bits of wood and metal, and spent hours drawing figures in the sand on the beach of the lake.

At about this period hard times befell Sweden. The small Northern country, half the size of Texas, with fewer people than the single city of London, never very rich, had trouble keeping her independence from Russia. Her king was a weakling, and lost part of his land. Then a gentleman of fortune, a man who had been a French lawyer's apprentice, and had risen to be a marshal, one whose sword had helped to carve out an empire for Napoleon, suddenly was elected King of Sweden. He brought the little country French support and better times, but meantime Olof Ericsson had lost his property and found that he must seek work at once to keep his family from starving.

Olof had lost his share in the mine and had been living in the depths of the pine forest choosing lumber for builders. He had encouraged his son John's talent for machinery, and now began to believe that the old prophecy might really come true. He had seen John, only ten years old, build a miniature sawmill and pumping engine at the mine, and had been as much astonished as any of the men there when his son proudly showed them the designs he had drawn for a new kind of pump to drain the mines of water.

Even when the little family had left the mining town and were living in the deep woods the boy continued working out his own inventions. He made tools for himself, using sharp pine needles for the points of a drawing compass he fashioned out of sticks, begging his mother for a few hairs from her fur coat to make paint brushes, and actually devising a ball and socket joint for a small windmill he was building. Everything he could lay his hands on he turned to some mechanical use, and all his thoughts seemed bent in that one direction.

The new King of Sweden was now planning to build a great ship canal at Göta to unite the Baltic and the North Seas, a scheme which had for a long time appealed to Swedish patriots as a protection against their great grasping neighbor, the Russian Bear. Through the influence of a friend, Count Platen, Olof Ericsson was given work in connection with the canal, and moved his family with him to a town called Forsvik. Here a great many soldiers were at work, for the canal was in charge of the army, and many skilled engineers were gathered to superintend the building.

Almost at the same time when Olof reported for work Count Platen and the other officers were surprised to see a small boy, not more than thirteen years old, come every day to watch the digging, to study the machinery, and to ask questions of every one in the place. He was a handsome boy, well built, with light, close-cut, curling hair, fair as Swedish boys almost always are, with clear blue eyes, and a very firm mouth and chin. While other boys of his age were at school or playing he would stand on the bank of the canal, studying by the hour some piece of machinery. Then on another day he would come with a pad of paper, some crude home-made drawing tools, and pencils, and perching himself on a pile of rocks or of lumber would draw the machinery as a skilled draughtsman might, and then work over his sketch, apparently adding to it or altering it to suit ideas of his own.

Count Platen watched the boy for several days, and then one morning went up to him. "May I see what you're doing?" he asked.

The boy, who had been absolutely absorbed in his work, looked up. "It's the sketch of a new pump to drain the canal," said he. "I made one for father's mine in Vermland, and I don't see why the same plan can't be used here. It'll do the work more quickly."

Count Platen looked at the drawing on the boy's lap, and listened intently while the young inventor explained how the machine should work. He was astounded at the knowledge the boy had of engineering.