My 2xgreat grandfather, Ishmael Catchpole Quinton - born 1819 to Ann Quinton in Coddenham; no father named on birth record; but I have sourced the birth father's name from Suffolk Records Office [spelt as Quintin]. From 1851 Census I found Ann Quinton stating birthplace of Wetheringsett, Suffolk; living in Coddenham, aged 75 - unmarried; a charwoman; head of household; giving approx year of birth as 1776. Also, a death record showing buried July1858 in Coddenham, St Mary's; birth year as 1776; & age as 82.
Ishmael married his 2nd of 3 wives, Lavinia Chittick who was the daughter of William & Hagar (nee Quinton) Chittick in 1840's. Hagar was born in Crowfield 22 Mar 1797 and her mother was also Ann Quinton, no father named on birth record; but again have sourced probable father from Suffolk Records Office. Lavinia Chittick also was born in Crowfield.
Given these coincidences, I think Ishmael & Hagar are probably brother & sister - but quite a stretch in between both; if same mother Ann, would have been 21 at Hagar's birth & 43 for Ishmael's.
I'm also keen to know who Ann's parents were to further research. I've searched on FindMyPast, Ancestry, Family Search with no match for Ann Quinton to 1776 birth year.