Conversationally, i agree that ex-wife seems much more common that former wife. In writing, though, the use of former doesn't seem so rare. Here's an interesting ngram.

Court docs explained! 3/3 : r/WOACB

🔗 Related Articles You Might Like:

Candace Parker Talks Signing Las Vegas Aces Closer To Family Most Important Exclusive Adele Wears Fendi Super Bowl Lorde Trying To Move As Quickly As She Can On Fourth Album

📸 Image Gallery

Court docs explained! 3/3 : r/WOACB
court doc.pdf | DocDroid
Court Docs: Ex-Angels Staffer Ran Drug Operation in Clubhouse Before
Whistleblower complaint alleges top DOJ official Emil Bove said he was
Adam King, Chicago vet, arrested, charged with child porn: Court docs
Rep. Gabe Vasquez Due in Court After Texas Police Execute Arrest
Sample Court Documents — WE FIGHT. YOU WIN.™
Jeannie Mai Accuses Jeezy Of Abuse In Court Docs (Photos)
13-year-old girl makes football team after kicking 45 yards
DailyNews
Court docs: Man assaulted 2 UC students, injured officer on campus
Court Letter of Support - Google Docs | Word - Highfile
Prosecutor alleges Sheriff Lyde left DPS to avoid getting fired
Man convicted of murder in the shooting of a UK police officer while
Wisconsin Man Hurled Baby Against Wall So Hard He 'Heard The Bang
Boy shot was wounded by mom at Mesa home, court docs say
Character Reference Letter for Court - Word | PDF | Google Docs - Highfile
In - Amid his tweets sparking headlines again, #KanyeWest is currently
36 Terrible Ways People Were Dumped
Yoga teacher Kaitlin Armstrong flashes new face in court appearance
Leigh Medina Court Docs.pdf | DocDroid
Twitter Whistleblower Alleges Deception: Allegations from Docs | TIME
States Objection to Motion to Stay Proceedings & other court docs from
Free Affidavit for Court | PDF | Word
Read Trump’s new charges in the classified documents case | PBS News
Reply Mohit Agg - IN THE COURT OF THE DISTRICT MAGISTRATE, NAINITAL
Man jumps over bench, attacks Las Vegas judge after she denies him
Lawyer Inibehe Effiong alleges that a judge sentenced him to one month
Daniel Chacon and Maira Gutierrez: New details emerge in court docs
Hunter Biden Tax Fraud Trial Update: Court Docs Reveal New Allegations