Abraham and Rachel Roberts's children

Abraham Roberts senior had several children with Rachel, at the rate of about one a year, after which Rachel (not unsurprisingly perhaps) died in December 1767, when she would have been no more than about thirty-five years of age:

1. Rachel Roberts, baptised at Stoke Damerel, Devon, 9 Apr 1758 – Died in infancy?

2. Abraham Roberts, baptised at Stoke Damerel, 22 Sep 1759 – Died in infancy? An Abraham Roberts was buried at Falmouth 21 Aug 1763 (no age given): perhaps this was him, interred in a family grave?

3. William Roberts, baptised at Stoke Damerel, 4 Oct 1760 – Died in infancy? A William Roberts was buried at Falmouth in 1760: perhaps this was him, interred in a family grave?

4. William Roberts, baptised at Stoke Damerel, 1 May 1762

5. James Roberts, baptised at Stoke Damerel, 12 Nov 1763

6. Abraham Roberts, baptised at Antony, Cornwall, 21 Oct 1764, Died 1804?

7. Lazarus Steele Roberts, baptised at Antony, 20 Oct 1765, Died 1813

8. Rachel Ann Roberts, baptised at Antony, 9 Nov 1766

The two known to have survived to adulthood were Abraham junior (baptised at Antony, 21 October 1764), my 4x great grandfather, and Lazarus Steel[e] (baptised at Antony, 20 October 1765).