diff --git a/app/models/bulkrax/csv_entry.rb b/app/models/bulkrax/csv_entry.rb
index 32595143..e290fa0e 100644
--- a/app/models/bulkrax/csv_entry.rb
+++ b/app/models/bulkrax/csv_entry.rb
@@ -88,9 +88,10 @@ def self.data_for_entry(data, _source_id, parser)
       # model has to be separated so that it doesn't get mistranslated by to_h
       raw_data = data.to_h
       raw_data[:model] = data[:model] if data[:model].present?
-      # If the collection field mapping is not 'collection', add 'collection' - the parser needs it
-      # TODO: change to :parents
-      raw_data[:parents] = raw_data[parent_field(parser).to_sym] if raw_data.keys.include?(parent_field(parser).to_sym) && parent_field(parser) != 'parents'
+      # If the parents/children field mapping uses a custom column name, alias it to the standard key
+      # so downstream code can find it regardless of what the CSV column is named.
+      raw_data[:parents] = raw_data[parser.related_parents_raw_mapping.to_sym] if parser.related_parents_raw_mapping.present? && raw_data.key?(parser.related_parents_raw_mapping.to_sym) && parser.related_parents_raw_mapping != 'parents'
+      raw_data[:children] = raw_data[parser.related_children_raw_mapping.to_sym] if parser.related_children_raw_mapping.present? && raw_data.key?(parser.related_children_raw_mapping.to_sym) && parser.related_children_raw_mapping != 'children'
       return raw_data
     end
 
diff --git a/app/models/bulkrax/entry.rb b/app/models/bulkrax/entry.rb
index 29f09f3c..180afd34 100644
--- a/app/models/bulkrax/entry.rb
+++ b/app/models/bulkrax/entry.rb
@@ -93,6 +93,10 @@ def self.parent_field(parser)
       parser.related_parents_parsed_mapping
     end
 
+    def self.child_field(parser)
+      parser.related_children_parsed_mapping
+    end
+
     def build
       return if type.nil?
       self.save if self.new_record? # must be saved for statuses
diff --git a/spec/models/bulkrax/csv_entry_spec.rb b/spec/models/bulkrax/csv_entry_spec.rb
index 5611794a..5a2ba22c 100644
--- a/spec/models/bulkrax/csv_entry_spec.rb
+++ b/spec/models/bulkrax/csv_entry_spec.rb
@@ -38,6 +38,58 @@ module Bulkrax
       end
     end
 
+    describe '.data_for_entry' do
+      let(:importer) { FactoryBot.create(:bulkrax_importer_csv, :with_relationships_mappings) }
+      let(:parser) { importer.parser }
+
+      # Simulate a CSV::Row with a custom-named column mapped to 'parents'/'children'
+      def make_row(hash)
+        headers = hash.keys
+        CSV::Row.new(headers, hash.values_at(*headers))
+      end
+
+      context 'when the parents column uses the default name "parents"' do
+        it 'does not alias raw_data[:parents] (already correct key)' do
+          row = make_row({ source_identifier: '1', title: 'test', parents: 'parent_1' })
+          result = described_class.data_for_entry(row, nil, parser)
+          expect(result[:parents]).to eq('parent_1')
+        end
+      end
+
+      context 'when the parents column uses a custom name matching the field mapping' do
+        it 'aliases the custom column to raw_data[:parents]' do
+          row = make_row({ source_identifier: '1', title: 'test', parents_column: 'parent_1' })
+          result = described_class.data_for_entry(row, nil, parser)
+          expect(result[:parents]).to eq('parent_1')
+        end
+      end
+
+      context 'when the children column uses the default name "children"' do
+        it 'does not alias raw_data[:children] (already correct key)' do
+          row = make_row({ source_identifier: '1', title: 'test', children: 'child_1' })
+          result = described_class.data_for_entry(row, nil, parser)
+          expect(result[:children]).to eq('child_1')
+        end
+      end
+
+      context 'when the children column uses a custom name matching the field mapping' do
+        it 'aliases the custom column to raw_data[:children]' do
+          row = make_row({ source_identifier: '1', title: 'test', children_column: 'child_1' })
+          result = described_class.data_for_entry(row, nil, parser)
+          expect(result[:children]).to eq('child_1')
+        end
+      end
+
+      context 'when both parents and children use custom column names' do
+        it 'aliases both to their standard keys' do
+          row = make_row({ source_identifier: '1', title: 'test', parents_column: 'parent_1', children_column: 'child_1' })
+          result = described_class.data_for_entry(row, nil, parser)
+          expect(result[:parents]).to eq('parent_1')
+          expect(result[:children]).to eq('child_1')
+        end
+      end
+    end
+
     context 'AttributeBuilderMethod.for' do
       # Why is this spec here?  Because we have a LOT of before blocks that are saying stubbing and
       # allowing different things.  When I had this method in a more logical place, it was getting