Looking for the Family of John O Connell Who Came from Ireland and Settled on the Farm Buffelsdrift IN Oudtshoorn

i AM LOOKING FOR ANY OF JOHN O'CONNEL'S FAMILY WHO CAME FROM IRELAND, IN THE EARLY 1800's AND SETTLED ON THE FARM BUFFELSDRIFT IN OUDTSHOORN. THEY STARTED THE FIRST CATHOLIC CHURCH ON THEIR FARM.
JOHN HAD A GRANDSON BY THE SAME NAME, JOHN ( JAN), AND A GREAT GRANDSON BY THE NAME CHARLES. CHARLES MARRIED SARA WOLMARANS. HIS SISTER MARRIED A MAN BY THE LAST NAME HAMMOND
THERE WERE ALSO BENCE AND HAMMOND FAMILIES LIVING ON BUFFELSDRIFT. I WOULD LOVE TO GET TO KNOW THE HISTORY OF THESE ONE'S AS I AM A DESCENDANT OF JOHN O'CONNELL. MAYBE THEY CAN HELP ME FILL IN MY FAMILY TREE.