Andrew Ferguson, Presbyterian Minister

My mum was Ferguson before marrying my Father. My Grandfather was born in Derry as was his Father their were both named William H.E Ferguson, the Sr William H.E Ferguson father was John Ferguson born in Burt / Fahan area of Donegal John worked on his fathers farm till age 22 when he joined RIC his father was James Ferguson a farmer in Burt/ Fahan area John was born around 1844 as of joining RIC in 1866 aged 22 John Ferguson son was Andrew Ferguson and called after a well respected member of Ferguson family am thinking that might be Andrew Ferguson Presbyterian ministers I am looking for information on James Ferguson marriage death and if my great great grandfather had any brothers and sisters.

E-mail received at Fahan Presbyterian in June 2010.