Brantner began buying expensive gifts and giving them to friends and family, Lynn said.
McDowell ordered Brantner to serve 18 months in the Washington County Detention Center and to pay restitution of $1,000 a month as soon he is released from jail on five years probation.
Brantner was sentenced on two counts of felony theft and one count of theft by scheme.
More than 100 charges were originally filed after an investigation that began when the victim, Helen Rizk, told police she had been getting phone calls from credit card companies seeking payment for cards she didn't have, police reports said.
Six credit cards had been obtained in the woman's name and sent to Brantner's former address in Boonsboro, police reports said.
A number of photographs taken at ATM machines around Washington County also showed Brantner making transactions with the credit cards, police reports said.
According to police reports, the incidents began in late June 1995, shortly after the death of Brantner's wife, the daughter of the victim. They continued through March 1996.