They lived close to the railway, upon which Mr. Chapman worked. Mid-afternoon, one September day, the oldest Chapman child (who was 9) came running into the house stating there was a cow coming down out of the woods. He was agitated enough for his mother to decide to take a look at what could have upset him.
There were some bushes bordering the nearby railway tracks and she spotted what appeared to her to be a bear moving among them. She called her younger children, who were playing near the tracks, to her side and then watched with horror as the creature reached the tracks and she saw it for what it really was; a gigantic 7 1/2 foot tall man covered in light brown, 4 inch long, hair. She described it to Ivan Sanderson shortly before her death thus:
Mrs. Chapman told me that the creature was about 7½ feet tall. She could estimate its height by the various fence and line posts standing about the field. It had a rather small head and a very short, thick neck; in fact really no neck at all, a point that was emphasized by William Roe and by all others who claim to have seen one of these creatures. Its body was entirely human in shape except that it was immensely thick through its chest and its arms were exceptionally long. She did not see the feet which were in the grass. Its shoulders were very wide and it had no breasts, from which Mrs. Chapman assumed it was a male, though she also did not see any male genitalia due to the long hair covering its groin. She was most definite on one point: the naked parts of its face and its hands were much darker than its hair, and appeared to be almost black.
It continued to approach and, whilst she stood her ground, she ordered her oldest child to round up his siblings and get a blanket. Believing the creature may be after the children, she decided to use a blanket to shield them. When the creature was about 100ft from her, she held the blanket aloft and backed away with her children out of sight behind her down the river nearby and then they fled towards the village.
She hoped by concealing the children in this way, the creature may not pursue them but instead busy itself by searching the house for them. Her instincts proved correct as it did search the house and then an outhouse where it broke apart a very large saltfish barrel allowing them to make their escape.
Mr. Chapman meanwhile returned home from work. He found the outhouse door broken, and very large footprints milling around the property. Concerned, and with the stories he knew of "sasquatch" he searched the property for his family. He found their tracks by the river and saw no large footprints following them but his relief was tempered when he then stumbled upon more large footprints disappearing back into the bushes near the railway.
Over the following week fresh footprints were found around the house each morning, the dogs were heard to become very over excited at night and the couple heard unnerving noises outside. Being sensible folk, they decided to leave their house and did not return.
Later investigation details can be found here and a little video with some more details on those is below.
If you feel benevolent and particularly generous, this writer always appreciates things bought for him from his wishlist