Born in a Sindhi speaking family of Karachi in undivided India, लाल कृष्ण आडवाणी Lal Krishna Advani (1927-) is a prominent Indian politician who played a significant role in the Bharatiya Janata Party’s rise to prominence. He served in various ministerial positions in BJP ruled governments, including Deputy Prime Minister of India. Here is the etymology of his name:
lāl
Hindi/Urdu /lāl/ लाल is considered polysemous in this name. On one hand it can be in the sense of indic origin /lāl/ लाल (dear/ darling/ dear son) from Sanskrit /lālya/ लाल्य via लालनीय /lālanīya/ (to be caressed or fondled or indulged). And on the other hand, lāl can mean ‘ruby’ from the Perso-Arabic word لعل la‘l ‘ruby’
Krishna
Krishna कृष्ण in the name of Lal Krishna Advani comes from his father’s name whose first name was Kishinchand किशिनचंद. In the erstwhile Bombay presidency of which Sindh once was a part, the naming convention requires the use of father’s name as a middle name (Compare it to Mohandas Karamchand Gandhi, where Karamchand is Gandhi’s father’s name). The word किशिन is from कृष्ण kṛṣṇa (a name of Lord Viṣṇu in his eighth incarnation, born as the son of Vasudeva and Devakī).
Advani
आडवाणी آڏواڻي āḍvāṇī is a surname originating in Sindh in undivided India. Encyclopedia Sindhiana estimates that the surname āḍvāṇī is after one of the Hindu ancestors of Advanis, āḍōmal आडोमल who migrated from Multan to Sindh along with Noor Mohammad Kalhoro (1698 – 1755) who in 1701 was appointed the governor of Upper Sindh by the Mughal emperor. The word āḍō आडो آڏو in Sindhi language means transverse, facing, front etc., so āḍōmal could be a name given to the first son of the family. This Sindhi word āḍō is a cognate to Hindi आड़ा āṛā (transverse, oblique) and अड्डा aḍḍā (a meeting place or a holding place) which is also related to अट्टा aṭṭā (an upper room; attic) evident in Noida’s (Delhi’s suburb) famed “Atta Peer” अट्टा पीर (probably the high seat of a Sufi saint). Not to forget the peculiar Bengali institution of agendaless discussions “Adda”. And Bhojpuri Atariya too. This ‘aḍḍ’ is also attested in Dravidian languages as market, nest, stopping place etc. But probably the word has its origin in an unknown non-Aryan & non-Dravidian language spoken in central / north India. Perhaps it was a Proto-Munda language.
The ubiquitous Sindhi surname suffix -āṇī आणी which forms the later part of this surname Advani, is considered a reflex of Sanskrit word aṃśin अंशिन् (coheir, sharer), and it is perceived as a marker of patronymic descent from one of the male ancestors. It is attached to the name of the perceived forefather, and this is the reason why many Sindhi surnames end in āṇī आणी (also spelled as ānī आनी) as in Jethmalani, Kriplani, Lalwani, Bhagchandani, Hiranandani and so on.
References:
Advani L. K. (2008). Merā desa merā jīvana (1. saṃskaraṇa). Prabhāta.
Surinder S. Gaur I. D. & Panjab University Department of History. (2008). Popular literature and pre-modern societies in south asia. Published by Dorling Kindersley (India) licensees of Pearson Education in South Asia.
Iyengar, A., & Parchani, S. (2021). Like Community, Like Language: Seventy-Five Years of Sindhi in Post-Partition India. Journal of Sindhi Studies, 1(1), 1-32. https://doi.org/10.1163/26670925-bja10002
https://encyclopediasindhiana.org/article.php?Dflt=%D8%A2%DA%8F%D9%88%D8%A7%DA%BB%D9%8A
https://dic.sindhila.edu.pk/index.php?txtsrch=%D8%A2%DA%8F%D9%88
Linguistica Indica 
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