1. Of biological parents not married to each other
   - illegitimately 
2. Of unwed parents
   "he was born out of wedlock"
   - outside marriage

Encyclopedia: Out of wedlock

• cannonball
• cannonball along
• cannoneer
• cannot
• cannula
• cannular
• cannulate
• cannulation
• cannulisation
• cannulise
• cannulization
• cannulize
• canny
• canoe
• canoe birch
• canoe cedar
• canoeist
• canola
• canola oil
• canon
• canon law
• canoness
• canonic
• canonical
• canonical hour