Ewing was charged with and convicted of felony grand theft of personal property.
A jury convicted him on Thursday of felony theft by deception, and he was fined $10,000.
The princess was charged with felony grand theft and dealing in stolen property.
Mr. Clark faces one charge of felony theft by deception.
Both youths were arrested and subsequently attended a joint court hearing, where they pleaded guilty to the felony theft.
She was charged with two counts of felony theft and could have received up to 10 years in prison.
In May 2009, a Florida man was charged with felony theft of a motorized cart due to its $2,500 value.
The felony theft and felony operation of a vehicle without consent charges were dropped.
In the spring of 2007, Ricks was convicted of felony theft.
She was convicted for felony theft of tribal land in September 1998.