The word Kuladevata is derived from two words: Kula, meaning
clan and Devata, meaning
deity. Thus, it can be said that Kuladevatas are deities which are worshiped by particular clans. The deity can be a male, female, animal or even an object, like a holy stone. Hindu families make a pilgrimage to the Kuladevata or Kuladevi temple to obtain the blessing of the deity after an auspicious occasion such as a wedding. Kuladevatas are worshiped in several sects of
Hinduism and
Jainism. In the state of
Maharashtra, the Kuladevatas are mainly manifestations of
Shiva or
Shakti such as
Khandoba or
Bhavani, respectively. In the states of
Gujarat and
Rajasthan, these deities are generally, the various manifestations of
Parvati, the consort of
Shiva. She is worshiped by different names by different clans. The Indian
King Cobra(
Nag) is also a famous Kuladevata. It is known by several names, such as, Nagadevata and Nagabaapji and is worshiped by several
Hindu,
Jain and
Kshatriya clans. Some
Kshatriya clans also claim themselves to be "Nagavanshi" or Descendents of the Naga.
In
South India,
Balaji of
Tirupati is one of the main Kuladevatas.
In Kerala, amongst the Nair community, each tharavadu (ancestral family house) has a Kula Devata - often, the devi form of Bhadra, besides Para Devatas of ancestors in tharavadu temples. However, each branch of the family and members are also worship Ishta-Devata depending upon village deities and choices.
In
Andhra Pradesh, Goddess
Vasavi Kanyakaparameshwari is the Kuladevi for the
Arya Vysya community.
In
Tamil Nadu, Goddess
Kamakshi and Lord
Muruga are family deities for many Brahmin
Iyers and also to
Maravar And
Vellalars. Goddess
Bhadrakali is the tutelary deity of Nadars. Majority of the Nadar Settlements will have a temple for Goddess
Bhadrakali. Goddess
Angalaparameshwari for majority of
chettiars and
vellalars. Lord
Narashima for Brahmin
Iyengars and also to
Naidu. Worship of Kuladevta is very much prominent amongst the Brahmins and Kshatriyas of Goa, Karnataka and Maharashtra, that are the Konkani Saraswats and Daivajna. Most of the Kuldevta temples are found in
Goa,
Shantadurga,
Mahalakshmi, Nagesh,
Mangesh, Ramnath to name a few. Kuladevtas play a very pious role in the Konkani Saraswats and Daivajna Brahmins, it can even supplant the role of the Istadevta.
https://en.wikipedia.org/wiki/Kuladevata
On personal level I think it does not matter. When you start to understand the deity is a symbol for God, just as a piece of colored cloth (flag) is a symbol for the country or cause.
ray2: 
