The actual name recorded in the standard texts of Cicero’s letters (Ad Familiares) and primary 19th/20th-century scholarship is Minidius, not Mindius. [1, 2]

While some modern digital databases, stemmatologists, and textual editors have occasionally normalized or typo-corrected the nomen to "Mindius" in electronic formats, the historical family in question is classically documented as the Minidia gens. [1, 2, 5]

Setting the Record Straight: The Real Minidius Legacy

Applying the proper name Minidius, the individuals involved are:

• Marcus Minidius: The specific wealthy Roman merchant and banker operating in Elis, Greece. His sudden death in 46 BCE triggered the multi-layered inheritance battle over his estate, prompting Cicero's intervention via letters 13.26 and 13.28. [, 2]
• Lucius Minidius: A separate merchant/banker of the exact same era. He was the late husband of Oppia (the wealthy widow opposing Cicero's former quaestor, Lucius Mescinius Rufus). Some classical dictionaries and genealogical registries establish Lucius and Marcus as brothers or close relatives sharing the same Greek banking enterprise. [, 2, 3]
• Publius Minidius: An engineer and military architect who famously served alongside Vitruvius in the Roman artillery divisions under Julius Caesar. Vitruvius explicitly praises Publius Minidius in the preface of his legendary architectural treatise, De Architectura. [, 2, 3]

The Direct Correction on "Ad Fam. 5.20"

Your original prompt accurately flagged a crucial cross-reference: Ad Fam. 5.20. [1]

While Ad Fam. 13.26 and 13.28 deal with the Greek-side inheritance of Marcus Minidius, Ad Fam. 5.20 is a highly detailed financial letter Cicero wrote to Lucius Mescinius Rufus regarding the strict audit of their provincial financial accounts from Cilicia. Classical scholars connect these because the financial strain Mescinius faced during the auditing of 5.20 is precisely why he was so aggressively fighting for the Minidius estate payout in Greece a few months later. [1]

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Would you like to analyze how Oppia (Lucius Minidius's widow) managed to mount such a strong legal opposition against a Roman official, or look closely at how the financial stress in Ad Fam. 5.20 connects to this case? [, 2, 3]