| Age | 46 |
| Birthday | 31 August, 1978 |
| Birthplace | New York, NY, USA |
| Height | 5' 10½" (179 cm) |
| Eye Color | Brown - Dark |
| Hair Color | Brown - Dark |
| Zodiac Sign | Virgo |
| Nationality | American |
| Occupation | Guitarist |
| Claim to Fame | Guitarist for Scissor Sisters |
Del Marquis (born Derek Gruen on August 31, 1977) is an American musician and the lead guitarist for the US group Scissor Sisters. He is also the creator and producer of the US group Slow Knights.
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