Query on Ann Adam

Ann Steele is on Geni with
* born 1773
* died 1849
* spouse Gabriel Steele (1774-1860) - married on 25/5/1800
children
* 1800 William Steel
* 1801 James Steele
* 1804 George Laurie Steel
* 1806 Mary Laurie Steele
* 1808 Bryce Steele
* 1810 James Steel
* 1812 Gabriel Steel
* 1814 Anne Steel
* 1828 Gabriel Steele
* 1830 Ann Steele
* 1836 Margaret Steele
* 1838 Jean Jane Steele
* 1840 James Steele
* 1842 Marion Campbell
* 1845 Mary Steele

Queries
* she married William on 25/5/1800 on the same day that he son William was born - are these dates correct?
* She had James on 22/6/1810 and Ann on 5/8/1810 - which is impossible - are these dates correct?
* She had children from 1800 to 1845 (age 27 to 72) - This suggests that the children born from 1828 are probably not hers. - Can anyone add anymore supporting information on these children?