New York attorney record · Judicial Dept 4
Kenneth Marblestone
Harvard alumna, admitted to the New York bar in 1974, registered office in Havertown, PA. A half-lifetime's worth of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1974
- Admitted
- 52
- Years in bar
- 1429935
- NY reg #
The record in one line
Kenneth Marblestone has spent 52 years on the register since admission in 1974, one of the longest-standing active practitioners the state bar carries at 96% tenure percentile.
- 52 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- Top 4%
- by tenure among active NY attorneys
- Law school
- Harvard
Data updated May 2026
What this profile tells you
Bar status & tenure
Kenneth Marblestone has carried New York bar registration 1429935 for the better part of a career, still active and in good standing. Registration is recorded within Judicial Department 4, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under The Mandmarblestone Group LLC, located in Havertown, PA, ZIP 19083. Educational background: HARVARD.
State context & due diligence
Across a career spanning 52 years, Kenneth Marblestone has remained part of the New York bar's active cohort, a share of the register detailed further below.
Experience vs. the active New York bar
Kenneth Marblestone's 52 years since a 1974 admission places this record near the far edge of the statewide tenure curve below.
52 years on the New York bar
Years since admission, all currently-active NY attorneys
52 Top 4% higher than 96% of 284,296 active NY attorneys
Each bar is a band; taller bars hold more active NY attorneys. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NY Office of Court Administration, Attorney Registration · May 2026
How Kenneth compares to fellow Harvard alumni
Among the 3,070 Harvard graduates in the New York register, Kenneth Marblestone is longer-tenured than 99% - a school-cohort view of experience, alongside the statewide one above.
52 years vs. Harvard alumni
Years since admission - 3,070 NY-registered alumni of this school
52 Top 1% higher than 99% of 3,070 fellow alumni
Each bar is a band; taller bars hold more fellow alumni. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NY Office of Court Administration, Attorney Registration · May 2026
The 1974 admission class today
Of the 2,908 attorneys admitted to the New York bar in 1974, 47.8% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 1429935
- Year Admitted
- 1974 (52 yrs · veteran)
- Judicial Department
- 4
- Next Registration
- Apr 2028
Location & Contact
- Company
- The Mandmarblestone Group LLC
- City
- Havertown, PA
- ZIP Code
- 19083
- Phone
- (215) 222-5000
Education
HARVARD
Status Distribution Across the New York Bar
Kenneth Marblestone's current status, "Currently registered", places this attorney in the 66.2% of the 429,620-attorney New York register currently marked active.
Full statewide breakdown & source note
Source: NY Office of Court Administration, Attorney Registrations. Status counts reflect the latest reporting cycle. Bar status confirms registration only; it does not imply competence, specialty fit, or freedom from complaints.
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Kenneth Marblestone's "Currently registered" listing confirms bar standing only, it is a registration fact to verify, not a verdict on quality or competence.
Frequently Asked Questions
Where is Kenneth Marblestone licensed?
Kenneth Marblestone is licensed to practice law in New York.
When was Kenneth Marblestone admitted to the bar?
Kenneth Marblestone's admission to the New York bar dates back to 1974.
Where did Kenneth Marblestone go to law school?
Kenneth Marblestone attended HARVARD.
What company does Kenneth Marblestone work for?
Kenneth Marblestone is associated with The Mandmarblestone Group LLC in Havertown, PA.
Is Kenneth Marblestone in good standing?
Yes, Kenneth Marblestone holds active bar status ("Currently registered").
Sourced from the NY Office of Court Administration, informational only, not legal advice. Full disclosure.
Read our methodology - how this data is sourced, computed, and verified.