This is probably of no great help, but one never knows. My Ggrandfather Alexander Nimmons married a Jane Toal in Ballymena Co. Antrim in 1862. In 1861, Robert Nimmons, I think my Ggrandfather's brother, but I have yet to confirm the link, married a Mary Toal in Ballymena. I believe both families came from near Randalstown. Jane's father was given as John Toal a farmer from the Townland of Ballytresna in the Parish of Drummaul. My granmother's name was Mary Jane Nimmons, whilst Mary and Jane are not uncommon names there may be a family connection here.