diff --git a/nameparser/config/titles.py b/nameparser/config/titles.py
index 1467a53..5845248 100644
--- a/nameparser/config/titles.py
+++ b/nameparser/config/titles.py
@@ -230,6 +230,7 @@
     'designer',
     'detective',
     'developer',
+    'dhr',
     'diplomat',
     'dir',
     'director',
@@ -289,7 +290,11 @@
     'forester',
     'founder',
     'fr',
+    'frau',
     'friar',
+    'frk',
+    'frøken',
+    'fru',
     'gaf',
     'gen',
     'general',
@@ -312,6 +317,10 @@
     'heiress',
     'her',
     'hereditary',
+    'heren',
+    'herr',
+    'herren',
+    'herrn',
     'high',
     'highness',
     'his',
@@ -323,6 +332,7 @@
     'honorable',
     'honourable',
     'host',
+    'hr',
     'illustrator',
     'imam',
     'industrialist',
@@ -398,6 +408,9 @@
     'merchant',
     'met',
     'metropolitan',
+    'mevr',
+    'mevrouw',
+    'mevrouwe',
     'mg',
     'mgr',
     'mgysgt',
@@ -412,6 +425,8 @@
     'mobster',
     'model',
     'monk',
+    'monseigneur',
+    'monsieur',
     'monsignor',
     'most',
     'mountaineer',
@@ -538,7 +553,15 @@
     'security',
     'seigneur',
     'senator',
+    'senhor',
+    'senhora',
+    'senhorita',
     'senior',
+    'señor',
+    'señora',
+    'señores',
+    'señorita',
+    'señoritas',
     'senior-judge',
     'sergeant',
     'servant',
@@ -551,6 +574,10 @@
     'sheikh',
     'sheriff',
     'siddha',
+    'signor',
+    'signora',
+    'signore',
+    'signorina',
     'singer',
     'singer-songwriter',
     'sma',
@@ -569,6 +596,8 @@
     'sr',
     'sra',
     'srta',
+    'srtas',
+    'sres',
     'ssg',
     'ssgt',
     'st',
@@ -619,6 +648,7 @@
     'vizier',
     'vocalist',
     'voice',
+    'vrouwe',
     'warden',
     'warrant',
     'wing',
diff --git a/tests/test_titles.py b/tests/test_titles.py
index 7b06121..5bad578 100644
--- a/tests/test_titles.py
+++ b/tests/test_titles.py
@@ -239,3 +239,36 @@ def test_2_same_prefixes_in_the_name(self) -> None:
         self.m(hh.first, "Vincent", hh)
         self.m(hh.middle, "van Gogh", hh)
         self.m(hh.last, "van Beethoven", hh)
+
+    # Non-ASCII title normalization — confirm diacritic titles survive
+    # the lowercase lookup path end-to-end.
+
+    def test_señora_non_ascii_title(self) -> None:
+        hn = HumanName("Señora María García")
+        self.m(hn.title, "Señora", hn)
+        self.m(hn.first, "María", hn)
+        self.m(hn.last, "García", hn)
+
+    def test_señora_lowercase_non_ascii_title(self) -> None:
+        hn = HumanName("señora María García")
+        self.m(hn.title, "señora", hn)
+        self.m(hn.first, "María", hn)
+        self.m(hn.last, "García", hn)
+
+    def test_frøken_non_ascii_title(self) -> None:
+        hn = HumanName("Frøken Jensen")
+        self.m(hn.title, "Frøken", hn)
+        self.m(hn.first, "", hn)
+        self.m(hn.last, "Jensen", hn)
+
+    def test_herr_title_not_first_name(self) -> None:
+        hn = HumanName("Herr Schmidt")
+        self.m(hn.title, "Herr", hn)
+        self.m(hn.first, "", hn)
+        self.m(hn.last, "Schmidt", hn)
+
+    def test_herr_title_with_first_name(self) -> None:
+        hn = HumanName("Herr Klaus Schmidt")
+        self.m(hn.title, "Herr", hn)
+        self.m(hn.first, "Klaus", hn)
+        self.m(hn.last, "Schmidt", hn)
diff --git a/tests/test_variations.py b/tests/test_variations.py
index 6edccee..d574573 100644
--- a/tests/test_variations.py
+++ b/tests/test_variations.py
@@ -178,6 +178,13 @@
     "U.S. District Judge Marc Thomas Treadwell",
     "Dra. Andréia da Silva",
     "Srta. Andréia da Silva",
+    "Herr Klaus Schmidt",
+    "Frau Anna Müller",
+    "Monsieur Jean Dupont",
+    "Señor Carlos García",
+    "Señora María García",
+    "Signor Marco Rossi",
+    "Mevrouw Anna de Vries",
 
 )