Illinois Petition For Deposition Of Witness To Will is a legal document used to request permission from the court to take the deposition of a witness to a Will in Illinois. This petition is typically filed by a probate attorney or executor of the estate in order to collect evidence to support the validity of the Will. It will typically include the witness’ name, address, and a summary of the information the witness may have regarding the Will. There are two types of Illinois Petition For Deposition Of Witness To Will: reprobate and post-probate. Pre-probate petitions are used before probate has been initiated, while post-probate petitions are used after probate has been initiated. The court will review the petition and may grant permission to take the deposition.