“Sankeshwar” generally refers to Shankheshwar / Sankheshwar Parshvanath Jain Tirth in Patan district, Gujarat, one of the very important tīrths of Bhagwān Pārshvanāth. Below is its history in simple form.

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1. Very early origin (ancient period)

• Shankheshwar has been a Jain center since very old times.
• Old references and ruins show that there was a Jain temple of Pārshvanāth here many centuries before the present temple, already known for its ātiśay (miraculous incidents).
• Because of invasions and time, the old temples were damaged and rebuilt several times.

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2. Major rebuilding by Sajjan Shah (11th–12th century CE)

The most famous historical point:

• Around Vikram Samvat 1155 (≈ 1098 CE),

Shri Sajjan Shah, a minister in the court of Solanki King Siddharāj Jaysinh of Gujarat, rebuilt the Shankheshwar Pārshvanāth temple.

• This reconstruction was done under the guidance of Jain Āchārya Shri Devendrasurishvarji (Śvetāmbara tradition).
• After this renovation, the tirth again became a very important and crowded pilgrimage place for Jains.

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3. Later renovations

After Sajjan Shah’s time, the temple did not remain in one fixed form:

• Over the centuries the temple was:

- damaged in attacks or by natural reasons, - then repaired or rebuilt again by Jain sanghs and wealthy śrāvaks.

• Different periods (medieval and later) saw renovations, expansions, and additions of new temples and upāśrayas around the main shrine.

Because of this, when we say “history of Sankeshwar temple” we are really talking about many rebuildings of the same sacred tirth, not a single structure lasting unchanged.

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4. Present form (modern period)

• The current main temple structure is comparatively modern (often dated to around the 18th–19th century in its present style),

but it stands on the very old, continuously worshipped tirtha-sthān of Pārshvanāth.

• Around the main derāsar today, there is a large temple-complex with:

- other Jain temples, - dharmśālās (rest houses), - bhaktiniwas, bhojanshalā, etc., serving thousands of yatris who come for darshan.

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5. Spiritual identity of Sankeshwar

Even though you asked for history, a few spiritual points complete the picture:

• Mūl-nāyak: Bhagwān Shankheshwar Pārshvanāth (Śvetāmbara tradition).
• The tirth is famous in both Śvetāmbara and Digambar communities as a powerful ātiśay kṣetra of Pārshvanāth.
• Many popular stavans and stotras like “Shankheshwar Pārshvanāth Stavan / Sankhesvar Stotram” praise this very deity and tirth.
• Jains have faith that sincere śraddhā, vrat, and prārthanā at Shankheshwar helps in removal of difficulties and supports progress towards dharma and ultimately mokṣa.

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If by “Sankeshwar temple” you meant some other specific local Jain temple named Sankeshwar (for example in another city or state), tell me the city/village name and I can give its separate Jain historical background.