I am off to search the records tomorrow so will check all the Janet KERR deaths to check parentage. There are 7 deaths for Janet KERRs who were born around 1786. It is likely that there is some connection as all my KERRs came from the Kirkcudbrightshire area. Robert KERR son of Andrew KERR and Elisabeth McCulloch, was born in Gelston in1776. He died about 1854, but I can't find any documentation about his death (or an M.I. in Ayrshire)
1857 KERR JANET LAIDLAW WADDLE F 70 STONEHOUSE /LANARK 656/00 0007
1857 KERR JANET SHEARER CRAIG F 70 INCHINNAN /RENFREW 566/00 0005
1861 KERR JANET CHRISTIE F 76 ST NICHOLAS ABERDEEN CITY/ABERDEEN 168/01 0050
1866 KERR JANET LORIMER YOUNG F 81 SANQUHAR /DUMFRIES 848/00
1870 KERR JANET CRAIG F 85 AYR /AYR 578/00 0110
1871 KERR JANET HUNTER F 84 MONKTON AND PRESTWICK /AYR 606/00 0029
1874 KERR JANET F 89 NEW CUMNOCK /AYR 608/00 0086