Symbolizing light in the darkness of life especially individual life, illlumination; it is the symbol of holy illumination of the spirit of truth. Lit in times of death, they also signify the light in the next world. Burn to petition for help, healing, or whatever you desire. As Christianity swept into pagan lands, and it officially replaced the old religions, sometimes remnants of the old culture and religion remained, however, and rather than discarding the old gods entirely, some cultures re-branded the native gods as Christian saints.
Candles are used in religious rituals & for spiritual means as both functional & symbolic lights. It was believed that burning candles would aid in protection & invite helpful spirits into the home. To personalize carve the name, ( and if you wish birth date, scars, & tattoos) of the person you wish to emulate into the candle. The more detail the better! If you have personal concerns of theirs those can be stuffed up into a hole you dig at the base of the candle. They can then be dressed with oil, like you would any other candle.
Candles may drip, so always burn candle on a non-porous heat resistant container to catch wax and never leave a burning candle unattended.