Taylor / Costello

Hi

Does anyone know anything of a William Taylor, born 1805, died 1898 and his wife Jane Taylor, born 1818, died 1898 also.

Their Daughter Marcella Taylor married William John Costello in June 1895 in the Parish Church in Dundrum. William Costello was born in Co Mayo and was the 'school master' at Castle Otway, Templederry from 1896 to c.1909.

I see on another thread reference to other Taylor / Costello marriages and I wonder is there any connection? Why would William Costello remove to Templederry, Co Tipperary?

Any help is appreciated!!!