Memorial services for Ryan L. Mortensen, 35, of Ankeny, will be Saturday at 11 am at Holy Trinity Lutheran Church in Ankeny.   A luncheon will follow the services at the church.   Visitation will be Friday from 5 pm to 7 pm at the Ankeny Funeral Home.  Memorials may be made to the Ryan Mortensen Memorial Fund to benefit his daughters education fund.  Ryan graduated from Jefferson-Scranton High School in 2000.