diff --git a/delegates.txt b/delegates.txt
index 30fe7fcc..72331a36 100644
--- a/delegates.txt
+++ b/delegates.txt
@@ -336,7 +336,7 @@ Nikolaus Papaspyrou (NPU)
 Noah Tye (NTE)
 Norbert Lindenberg (NL)
 Oliver Hunt (OH)
-Pablo Gorostiaga Belio (PGB)
+Pablo Gorostiaga Belio (PBO)
 Paolo Severini (PSI)
 Patrick Soquet (PST)
 Paul Leather (PLR)
diff --git a/scripts/check-delegates-test.mjs b/scripts/check-delegates-test.mjs
index b3265b12..3a727116 100644
--- a/scripts/check-delegates-test.mjs
+++ b/scripts/check-delegates-test.mjs
@@ -8,6 +8,8 @@ const twoLetter = `Chris de Almeida (CDA)\nRob Palmer (RP)\nUjjwal Sharma (USA)`
 const threeLetter = `Chris de Almeida (CDA)\nRob Palmer (ROBPALMER)\nUjjwal Sharma (USA)`;
 const duplicate = `Chris de Almeida (CDA)\nRob Palmer (RPR)\nUjjwal Sharma (USA)\nUjjwal Sharma (USA)`;
 const valid = `Chris de Almeida (CDA)\nMichael Ficarra (MF)\nRob Palmer (RPR)\nUjjwal Sharma (USA)`;
+const mononymous = `Chris de Almeida (CDA)\nYee (YEE)\nRob Palmer (RPR)\nUjjwal Sharma (USA)`;
+const idealTLA = `Chris de Almeida (CAA)\nMichael Ficarra (MF)\nRob Palmer (RPR)\nUjjwal Sharma (USA)`;
 
 assert.throws(() => checkDelegates(lex), { message: 'Line 3: Not in lexicographic order.' }); // also validates expected line number
 assert.throws(() => checkDelegates(missing), { message: /Missing abbreviation for/ });
@@ -15,5 +17,7 @@ assert.throws(() => checkDelegates(uppercaseLatin), { message: /Abbreviations mu
 assert.throws(() => checkDelegates(twoLetter), { message: /not in allowlist. New delegate abbreviations must be three letters/ });
 assert.throws(() => checkDelegates(threeLetter), { message: /New delegate abbreviations must be three letters/ });
 assert.throws(() => checkDelegates(duplicate), { message: /Conflicting usage on line/ });
+assert.throws(() => checkDelegates(mononymous), { message: /Unexpected mononymous delegate/ });
+assert.throws(() => checkDelegates(idealTLA), { message: /Should be using ideal TLA \(CDA\)/ });
 
 assert.doesNotThrow(() => checkDelegates(valid));
diff --git a/scripts/check-delegates.mjs b/scripts/check-delegates.mjs
index 862bbe5e..0a1f4060 100755
--- a/scripts/check-delegates.mjs
+++ b/scripts/check-delegates.mjs
@@ -19,8 +19,44 @@ export function checkDelegates(contents = fs.readFileSync('./delegates.txt', 'ut
     'VM', 'WH', 'YK', 'ZB',
   ]);
 
+  // list of abbreviations that are not ideal.
+  // most of these are here because they are grandfathered in.
+  // new elements should only be false positives.
+  const NON_IDEAL_ABBRS = new Set([
+    'AVP', 'AC', 'AK', 'AEC', 'AS', 'AR', 'ASH', 'AWB', 'ARB', 'ACB',
+    'AVK', 'ABU', 'ALH', 'AEH', 'AVC', 'AYS', 'BM', 'RTM', 'BZ',
+    'BG', 'BB', 'BE', 'BRK', 'BT', 'BNG', 'CJT', 'CP', 'CZW', 'CM',
+    'CHU', 'LCP', 'CJI', 'CF', 'CJR', 'CCN', 'DHC', 'DDC', 'DJF',
+    'DLM', 'DAS', 'DE', 'DVE', 'DH', 'DMP', 'DEN', 'DTL', 'DJW',
+    'DFS', 'DT', 'DFV', 'DL', 'DS', 'DD', 'DMM', 'EDB', 'EY', 'EF',
+    'ET', 'EA', 'REK', 'FED', 'FP', 'FN', 'FRT', 'FYT', 'GI', 'GN',
+    'GKZ', 'GY', 'GRS', 'GPT', 'GCW', 'LGY', 'GB', 'HUG', 'IH', 'IT',
+    'IOA', 'IVH', 'IS', 'JBS', 'JPG', 'JH', 'JRB', 'JSL', 'JK',
+    'JXF', 'JAN', 'JTO', 'JS', 'JFP', 'JHL', 'JSW', 'JZY', 'JAZ',
+    'JMN', 'YJM', 'JN', 'JP', 'JDD', 'JT', 'JPB', 'KGO', 'KZM', 'KM',
+    'KCD', 'KG', 'KR', 'KS', 'XAX', 'KHG', 'KOT', 'KBK', 'LB', 'LZH',
+    'LM', 'LWT', 'LEO', 'LIU', 'LL', 'LCA', 'LFP', 'MJN', 'MHA',
+    'MPC', 'MED', 'MH', 'MM', 'MJS', 'MWS', 'MAR', 'MS', 'MAG', 'MF',
+    'MLS', 'MZG', 'MP', 'MCW', 'JXZ', 'MQW', 'WMM', 'MYC', 'MGR',
+    'MCM', 'NH', 'SNS', 'NC', 'NLY', 'NM', 'NL', 'OH', 'PBO', 'PL',
+    'PFM', 'PJ', 'PZE', 'PFC', 'PLH', 'PMD', 'RX', 'JHJ', 'RB', 'RH',
+    'ROF', 'ZRJ', 'STH', 'SC', 'SM', 'SMK', 'SYH', 'SFC', 'SJY',
+    'SRK', 'SYP', 'SP', 'SRL', 'SZH', 'SJL', 'SSA', 'SZT', 'TAB',
+    'TEK', 'TS', 'TW', 'TOC', 'YTX', 'XTY', 'TJC', 'TD', 'TC', 'TVC',
+    'VM', 'WH', 'XWC', 'LWW', 'WES', 'WWW', 'WXK', 'HUX', 'WYJ',
+    'YKZ', 'YIY', 'YKL', 'YRL', 'YYC', 'LZM', 'ZYY', 'LZJ', 'ZB',
+    'ZJL',
+  ]);
+
+  // delegates with only one name. this list should be as close to zero as possible...
+  const MONONYMOUS = new Set([
+    'Cuili',
+    'Surma',
+  ]);
+
+  const allAbbrs = new Set(contents.match(/(?<=\()[^)]*(?=\))/g));
 
-  const re = /^(?<name>[^(]+)(?: \((?<abbr>[^)]*)\))?$/;
+  const re = /^(?<firstName>[^( ]+) ?(?<lastName>[^(]+)?(?: \((?<abbr>[^)]*)\))?$/;
   const abbrs = new Map;
   const lines = contents.split('\n');
 
@@ -30,7 +66,7 @@ export function checkDelegates(contents = fs.readFileSync('./delegates.txt', 'ut
   for (const line of lines) {
     if (line.length === 0) continue;
     const match = re.exec(line);
-    const { abbr } = match.groups;
+    const { abbr, firstName, lastName } = match.groups;
 
     if (previousLine.localeCompare(line, 'en') > 0) {
       throw new Error(`Line ${lineNumber}: Not in lexicographic order.`);
@@ -57,9 +93,29 @@ export function checkDelegates(contents = fs.readFileSync('./delegates.txt', 'ut
     }
     abbrs.set(abbr, lineNumber);
 
+    const idealTLA = getIdealTLA(firstName, lastName);
+
+    if (idealTLA){
+      if (!allAbbrs.has(idealTLA) && !NON_IDEAL_ABBRS.has(abbr)){
+        throw new Error(`Line ${lineNumber}: Should be using ideal TLA (${idealTLA}).  Note: because code cannot distinguish between a middle name vs a two-part last name, this may be a false positive.`)
+      }
+    } else if (!MONONYMOUS.has(firstName)) {
+      throw new Error(`Line ${lineNumber}: Unexpected mononymous delegate.`)
+    }
+
     previousLine = line;
     ++lineNumber;
   }
 
   console.debug('...delegates are valid\n');
 }
+
+function getIdealTLA(firstName, lastName) {
+
+  if (lastName) {
+    return `${firstName.slice(0, 1)}${lastName.slice(0, 1)}${lastName.slice(lastName.length - 1)}`.toUpperCase();
+  }
+
+  return null;
+
+}