Short answer in Jain Dharma context:

• Kuldevi (kuldevta) ka matlab: yeh aapke parivar ya gotra ki sthaniya, kul se judi devi/devta hoti hain. Inka worship aksar parivarik ya samudaayik sanskaron me hota hai, lekin Jain dharma ki mukhya bhakti Tirthankaro ki hoti hai.
• Jainism me kuldevi/kuldevatayen canonical (sutronic) roop se central nahi hain. Jain path ahimsa, pravrutti-viruddha bhakti aur Tirthankaro ke uddeshya par kendrit hai.
• Kuch Jain samudaay (khas kar kuch deshon/kshetron me) apne parivarik devtaon ki pooja ko samajik-canskriti ke roop me chalate hain. Inka role samudaayik pehchaan, shraddha, aur sanskaar banaye rakhna hota hai, na ki spiritual moksha ya arthik mukti ki prapti ka adhar.
• Digambar aur Shwetambar dono mein iski vyakhya alag ho sakti hai: dono traditions ke mukhya tattva (Tirthankar bhakti, ahimsa, samyak darshan) ek jaise hain, par kuldevi/kuldevaton ki mahatva aur vyavahar ki vyakhya regional practices ke hisab se alag ho sakti hai.

Aap chahen to main is par Jain scriptures ya pramukh Jain sources ke roop me adhik vistar se arth (arth) aur udaharan de sakta/sakti hoon.