The 83-year-old offender was convicted of historical sexual offences against his stepdaughter and niece, committed between 1969 and 1997.
The abuse of the stepdaughter involved frequent, escalating sexual acts including full intercourse over five years while she was between the ages of four and nine.
The court found the offender's position of trust, the young age of the victims, the prolonged duration, and the devastating impact on the victims to be significant aggravating factors.
The offender was sentenced to a total of 5 years and 45 days in a penitentiary.