If you go back into this thread and read back and I know it's a long one, the marriage of William Stevenson to Elizabeth Rogers took place in Loughborough in 1799 so their eldest son John was born in the town a couple of years later, as is my Elizabeth in 1803 and your William in 1805. It looks as if William, the father was a needlemaker based on the 1811 census, which would have been a skill important to Heathcoat before precision needles were mass produced. We know that this family unit moved to Tiverton.
I went back and matched up births for a William and Ann Stevenson in Loughborough and found six births. ( I would love to know Ann's maiden name.) They had a son called William christened in May of 1769 who would have been the husband of Elizabeth Rogers. A brother, John died at aged one leaving William with younger sisters, Mary 1774 and two Elizabeths, the first one born in 1778 and dying as a baby, and the second born in 1780. Last was Hannah born in 1781. It would be interesting to see who those female children married because for all we know they may have married lacemakers and were along on the March from Loughborough to Tiverton too! Then we could match it with the 1851 and 1861 census in Tiverton or Loughborough if they stayed behind. So we are left with questions about Mary, Elizabeth and Hannah who probably married around the same time as their brother if they married at all.