diff --git a/README.md b/README.md
index a17e6eb..3bde866 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@
 ## Installation
 
 ```bash
-npm install bible-ref-parser
+npm install @idrw/bible-ref-parser
 ```
 
 ## Usage
diff --git a/package.json b/package.json
index 5cc6382..02ea20f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@idrw/bible-ref-parser",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "main": "./build/index.js",
   "type": "module",
   "scripts": {
diff --git a/src/index.ts b/src/index.ts
index ec03ebc..617c57b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -72,24 +72,42 @@ function parseBook(query: string): BookData | null {
 
 
 function replaceRomanNumbers(query: string) {
-    let romanNumber = 0
-    let idx
+    const edgeCases = [
+        { words: ["isamuel", "isam", "ism"], sliceAt: 1 },
+        { words: ["isaiah",  "isa",  "is"],  sliceAt: 0 }
+    ]
 
-    for (let i = 0; i < query.length; i++) {
-        if (query[i] === "I") {
-            romanNumber += 1
-            continue
+    for (const edgeCase of edgeCases) {
+        for (const word of edgeCase.words) {
+            if (query.toLowerCase().startsWith(word)) {
+                const ordinal = edgeCase.sliceAt === 0 ? "" : "1 "
+                return `${ordinal}${query.slice(edgeCase.sliceAt)}`
+            }
         }
+    }
+
+    let romanNumber = ""
+    let idx
 
-        idx = (query[i] === " ") ? (i + 1) : i
-        break
+    const ordinals = [
+        { text: "iii", properOrd: "3", endPosition: 3 },
+        { text: "ii",  properOrd: "2", endPosition: 2 },
+        { text: "i",   properOrd: "1", endPosition: 1 },
+    ]
+
+    for (const ord of ordinals) {
+        if (query.toLowerCase().startsWith(ord.text)) {
+            idx = ord.endPosition
+            romanNumber += ord.properOrd
+            break
+        }
     }
 
-    if (romanNumber === 0) {
+    if (romanNumber === "") {
         return query
     }
 
-    return `${romanNumber} ${query.slice(idx)}`
+    return `${romanNumber} ${query.slice(idx).trim()}`
 }
 
 
diff --git a/test/app.test.ts b/test/app.test.ts
index 7c7ae3e..2dd5a88 100644
--- a/test/app.test.ts
+++ b/test/app.test.ts
@@ -57,7 +57,10 @@ test('replaceRomanNumbers() should replace "I" with 1, "II" with 2 and "III" wit
         { input: "II Kings",        expected: "2 Kings" },
 
         { input: "III John",        expected: "3 John" },
-        { input: "IIJohn",          expected: "2 John" }
+        { input: "IIJohn",          expected: "2 John" },
+        { input: "Isaiah",          expected: "Isaiah" },
+        { input: "Isamuel",         expected: "1 samuel" },
+        { input: "isAmUeL",         expected: "1 sAmUeL" }
     ]
 
     for (const { input, expected } of cases) {
@@ -72,6 +75,9 @@ test('replaceRomanNumbers() should return the original string if no book number
         { input: "Timothy",         expected: "Timothy" },
         { input: "John",            expected: "John" },
         { input: "Thessalonians",   expected: "Thessalonians" },
+        { input: "isaiah",          expected: "isaiah" },
+        { input: "isa",             expected: "isa" },
+        { input: "is",              expected: "is" },
     ]
 
     for (const { input, expected } of cases) {
@@ -276,6 +282,11 @@ test('parseBook() should return the expected bookData', async (t) => {
         { input: "1st John", expected: { name: "1 John", references: [] } },
         { input: "first JOHN", expected: { name: "1 John", references: [] } },
         { input: "2ndtim", expected: { name: "2 Timothy", references: [] } },
+        { input: "isa", expected: { name: "Isaiah", references: [] } },
+        { input: "isam", expected: { name: "1 Samuel", references: [] } },
+        { input: "Ism", expected: { name: "1 Samuel", references: [] } },
+        { input: "IIsm", expected: { name: "2 Samuel", references: [] } },
+        { input: "iSaIAH", expected: { name: "Isaiah", references: [] } },
     ]
 
     for (const { input, expected } of cases) {